121202221020120 has 48 divisors (see below), whose sum is σ = 393907218316560. Its totient is φ = 32320592271936.

The previous prime is 121202221020103. The next prime is 121202221020149. The reversal of 121202221020120 is 21020122202121.

It is a happy number.

121202221020120 is a `hidden beast` number, since 1 + 21 + 202 + 221 + 0 + 201 + 20 = 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 = 121202221020093 and 121202221020102.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 168336417724 + ... + 168336418443.

It is an arithmetic number, because the mean of its divisors is an integer number (8206400381595).

Almost surely, 2^{121202221020120} is an apocalyptic number.

121202221020120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121202221020120 is an abundant number, since it is smaller than the sum of its proper divisors (272704997296440).

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

121202221020120 is a wasteful number, since it uses less digits than its factorization.

121202221020120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336672836184 (or 336672836177 counting only the distinct ones).

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

Adding to 121202221020120 its reverse (21020122202121), we get a palindrome (142222343222241).

The spelling of 121202221020120 in words is "one hundred twenty-one trillion, two hundred two billion, two hundred twenty-one million, twenty thousand, one hundred twenty".