121202111002020 has 24 divisors (see below), whose sum is σ = 339365910805824. Its totient is φ = 32320562933856.

The previous prime is 121202111002009. The next prime is 121202111002033. The reversal of 121202111002020 is 20200111202121.

It is a super-2 number, since 2×121202111002020² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1010017591624 + ... + 1010017591743.

It is an arithmetic number, because the mean of its divisors is an integer number (14140246283576).

Almost surely, 2^{121202111002020} is an apocalyptic number.

121202111002020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121202111002020 is an abundant number, since it is smaller than the sum of its proper divisors (218163799803804).

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

121202111002020 is a wasteful number, since it uses less digits than its factorization.

121202111002020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2020035183379 (or 2020035183377 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 121202111002020 its reverse (20200111202121), we get a palindrome (141402222204141).

The spelling of 121202111002020 in words is "one hundred twenty-one trillion, two hundred two billion, one hundred eleven million, two thousand, twenty".