1222012222101 has 48 divisors (see below), whose sum is σ = 1929465645120. Its totient is φ = 739126080000.

The previous prime is 1222012222091. The next prime is 1222012222157. The reversal of 1222012222101 is 1012222102221.

It is a happy number.

1222012222101 is a `hidden beast` number, since 12 + 220 + 1 + 222 + 210 + 1 = 666.

It is not a de Polignac number, because 1222012222101 - 2⁷ = 1222012221973 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1222012222901) 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, 151216381 + ... + 151224461.

It is an arithmetic number, because the mean of its divisors is an integer number (40197200940).

Almost surely, 2^{1222012222101} is an apocalyptic number.

1222012222101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1222012222101 is a deficient number, since it is larger than the sum of its proper divisors (707453423019).

1222012222101 is a wasteful number, since it uses less digits than its factorization.

1222012222101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10978 (or 10975 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 1222012222101 its reverse (1012222102221), we get a palindrome (2234234324322).

The spelling of 1222012222101 in words is "one trillion, two hundred twenty-two billion, twelve million, two hundred twenty-two thousand, one hundred one".