121002001211020 has 48 divisors (see below), whose sum is σ = 269277792487200. Its totient is φ = 45592007175680.

The previous prime is 121002001211011. The next prime is 121002001211041. The reversal of 121002001211020 is 20112100200121.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2544173050 + ... + 2544220609.

It is an arithmetic number, because the mean of its divisors is an integer number (5609954010150).

Almost surely, 2^{121002001211020} is an apocalyptic number.

121002001211020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121002001211020 is an abundant number, since it is smaller than the sum of its proper divisors (148275791276180).

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

121002001211020 is a wasteful number, since it uses less digits than its factorization.

121002001211020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5088393738 (or 5088393736 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 121002001211020 its reverse (20112100200121), we get a palindrome (141114101411141).

The spelling of 121002001211020 in words is "one hundred twenty-one trillion, two billion, one million, two hundred eleven thousand, twenty".