121220020120010 has 64 divisors (see below), whose sum is σ = 251841454421760. Its totient is φ = 41148742003200.

The previous prime is 121220020120009. The next prime is 121220020120021. The reversal of 121220020120010 is 10021020022121.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 370212446 + ... + 370539734.

It is an arithmetic number, because the mean of its divisors is an integer number (3935022725340).

Almost surely, 2^{121220020120010} is an apocalyptic number.

121220020120010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121220020120010 is an abundant number, since it is smaller than the sum of its proper divisors (130621434301750).

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

121220020120010 is a wasteful number, since it uses less digits than its factorization.

121220020120010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 379791.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 121220020120010 its reverse (10021020022121), we get a palindrome (131241040142131).

The spelling of 121220020120010 in words is "one hundred twenty-one trillion, two hundred twenty billion, twenty million, one hundred twenty thousand, ten".