121002021220010 has 128 divisors (see below), whose sum is σ = 257126355763200. Its totient is φ = 40978388711232.

The previous prime is 121002021220009. The next prime is 121002021220021. The reversal of 121002021220010 is 10022120200121.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 98271629 + ... + 99495311.

It is an arithmetic number, because the mean of its divisors is an integer number (2008799654400).

Almost surely, 2^{121002021220010} is an apocalyptic number.

121002021220010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121002021220010 is an abundant number, since it is smaller than the sum of its proper divisors (136124334543190).

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

121002021220010 is a wasteful number, since it uses less digits than its factorization.

121002021220010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1224065 (or 1224051 counting only the distinct ones).

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

Adding to 121002021220010 its reverse (10022120200121), we get a palindrome (131024141420131).

The spelling of 121002021220010 in words is "one hundred twenty-one trillion, two billion, twenty-one million, two hundred twenty thousand, ten".