121020021220212 has 72 divisors (see below), whose sum is σ = 321976736195296. Its totient is φ = 39737917394208.

The previous prime is 121020021220207. The next prime is 121020021220297. The reversal of 121020021220212 is 212022120020121.

It is a happy number.

121020021220212 is a `hidden beast` number, since 1 + 2 + 10 + 200 + 21 + 220 + 212 = 666.

It is a super-2 number, since 2×121020021220212² (a number of 29 digits) contains 22 as substring.

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 23 ways as a sum of consecutive naturals, for example, 929085583 + ... + 929215830.

Almost surely, 2^{121020021220212} is an apocalyptic number.

121020021220212 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121020021220212 is an abundant number, since it is smaller than the sum of its proper divisors (200956714975084).

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

121020021220212 is a wasteful number, since it uses less digits than its factorization.

121020021220212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1858301499 (or 1858301485 counting only the distinct ones).

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

Adding to 121020021220212 its reverse (212022120020121), we get a palindrome (333042141240333).

The spelling of 121020021220212 in words is "one hundred twenty-one trillion, twenty billion, twenty-one million, two hundred twenty thousand, two hundred twelve".