121220110222000 has 240 divisors, whose sum is σ = 296413851326112. Its totient is φ = 47947501324800.

The previous prime is 121220110221943. The next prime is 121220110222039. The reversal of 121220110222000 is 222011022121.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (16).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16062022227 + ... + 16062029773.

Almost surely, 2^{121220110222000} is an apocalyptic number.

121220110222000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121220110222000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148206925663056).

121220110222000 is an abundant number, since it is smaller than the sum of its proper divisors (175193741104112).

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

121220110222000 is an equidigital number, since it uses as much as digits as its factorization.

121220110222000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8533 (or 8414 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 121220110222000 its reverse (222011022121), we get a palindrome (121442121244121).

The spelling of 121220110222000 in words is "one hundred twenty-one trillion, two hundred twenty billion, one hundred ten million, two hundred twenty-two thousand".