121020010120 has 32 divisors (see below), whose sum is σ = 278627469120. Its totient is φ = 47282235840.

The previous prime is 121020010103. The next prime is 121020010121. The reversal of 121020010120 is 21010020121.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 121020010097 and 121020010106.

It is not an unprimeable number, because it can be changed into a prime (121020010121) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35178516 + ... + 35181955.

It is an arithmetic number, because the mean of its divisors is an integer number (8707108410).

Almost surely, 2^121020010120 is an apocalyptic number.

121020010120 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121020010120 is an abundant number, since it is smaller than the sum of its proper divisors (157607459000).

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

121020010120 is a wasteful number, since it uses less digits than its factorization.

121020010120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70360525 (or 70360521 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 121020010120 its reverse (21010020121), we get a palindrome (142030030241).

The spelling of 121020010120 in words is "one hundred twenty-one billion, twenty million, ten thousand, one hundred twenty".