121012112001222 has 192 divisors, whose sum is σ = 294380332646400. Its totient is φ = 35669768359680.

The previous prime is 121012112001203. The next prime is 121012112001229. The reversal of 121012112001222 is 222100211210121.

121012112001222 is a `hidden beast` number, since 1 + 210 + 1 + 211 + 20 + 0 + 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 = 121012112001195 and 121012112001204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121012112001229) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 7878897979 + ... + 7878913337.

It is an arithmetic number, because the mean of its divisors is an integer number (1533230899200).

Almost surely, 2^{121012112001222} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121012112001222, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (147190166323200).

121012112001222 is an abundant number, since it is smaller than the sum of its proper divisors (173368220645178).

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

121012112001222 is a wasteful number, since it uses less digits than its factorization.

121012112001222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24403 (or 24400 counting only the distinct ones).

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

Adding to 121012112001222 its reverse (222100211210121), we get a palindrome (343112323211343).

The spelling of 121012112001222 in words is "one hundred twenty-one trillion, twelve billion, one hundred twelve million, one thousand, two hundred twenty-two".