121011022201212 has 336 divisors, whose sum is σ = 376100142119520. Its totient is φ = 33849222865920.

The previous prime is 121011022201169. The next prime is 121011022201229. The reversal of 121011022201212 is 212102220110121.

121011022201212 is a `hidden beast` number, since 1 + 210 + 110 + 2 + 220 + 121 + 2 = 666.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 111 ways as a sum of consecutive naturals, for example, 49256364 + ... + 51654732.

It is an arithmetic number, because the mean of its divisors is an integer number (1119345661070).

Almost surely, 2^{121011022201212} is an apocalyptic number.

121011022201212 is a gapful number since it is divisible by the number (12) 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 121011022201212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188050071059760).

121011022201212 is an abundant number, since it is smaller than the sum of its proper divisors (255089119918308).

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

121011022201212 is a wasteful number, since it uses less digits than its factorization.

121011022201212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2398437 (or 2398398 counting only the distinct ones).

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

Adding to 121011022201212 its reverse (212102220110121), we get a palindrome (333113242311333).

The spelling of 121011022201212 in words is "one hundred twenty-one trillion, eleven billion, twenty-two million, two hundred one thousand, two hundred twelve".