121002111022120 has 16 divisors (see below), whose sum is σ = 272254749799860. Its totient is φ = 48400844408832.

The previous prime is 121002111022069. The next prime is 121002111022127. The reversal of 121002111022120 is 21220111200121.

It can be written as a sum of positive squares in 2 ways, for example, as 99417371122276 + 21584739899844 = 9970826^2 + 4645938^2 .

It is a super-2 number, since 2×121002111022120² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121002111022094 and 121002111022103.

It is not an unprimeable number, because it can be changed into a prime (121002111022127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1512526387737 + ... + 1512526387816.

Almost surely, 2^{121002111022120} is an apocalyptic number.

121002111022120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121002111022120 is an abundant number, since it is smaller than the sum of its proper divisors (151252638777740).

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

121002111022120 is a wasteful number, since it uses less digits than its factorization.

121002111022120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3025052775564 (or 3025052775560 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 121002111022120 its reverse (21220111200121), we get a palindrome (142222222222241).

The spelling of 121002111022120 in words is "one hundred twenty-one trillion, two billion, one hundred eleven million, twenty-two thousand, one hundred twenty".