121222110012 has 48 divisors (see below), whose sum is σ = 285699173760. Its totient is φ = 40001113152.

The previous prime is 121222109999. The next prime is 121222110013. The reversal of 121222110012 is 210011222121.

It is a super-2 number, since 2×121222110012² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121222109973 and 121222110000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121222110013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1801803 + ... + 1867869.

It is an arithmetic number, because the mean of its divisors is an integer number (5952066120).

Almost surely, 2^121222110012 is an apocalyptic number.

121222110012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121222110012 is an abundant number, since it is smaller than the sum of its proper divisors (164477063748).

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

121222110012 is a wasteful number, since it uses less digits than its factorization.

121222110012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67610 (or 67608 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121222110012 its reverse (210011222121), we get a palindrome (331233332133).

The spelling of 121222110012 in words is "one hundred twenty-one billion, two hundred twenty-two million, one hundred ten thousand, twelve".