121100102121222 has 96 divisors (see below), whose sum is σ = 307984417737984. Its totient is φ = 33663473640000.

The previous prime is 121100102121221. The next prime is 121100102121233. The reversal of 121100102121222 is 222121201001121.

121100102121222 is a `hidden beast` number, since 121 + 100 + 10 + 212 + 1 + 222 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 121100102121195 and 121100102121204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121100102121221) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 112522597 + ... + 113593727.

It is an arithmetic number, because the mean of its divisors is an integer number (3208171018104).

Almost surely, 2^{121100102121222} is an apocalyptic number.

121100102121222 is an abundant number, since it is smaller than the sum of its proper divisors (186884315616762).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

121100102121222 is a wasteful number, since it uses less digits than its factorization.

121100102121222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1095434 (or 1095431 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 121100102121222 its reverse (222121201001121), we get a palindrome (343221303122343).

The spelling of 121100102121222 in words is "one hundred twenty-one trillion, one hundred billion, one hundred two million, one hundred twenty-one thousand, two hundred twenty-two".