202110121001100 has 72 divisors (see below), whose sum is σ = 629754407808400. Its totient is φ = 49750183630080.

The previous prime is 202110121001069. The next prime is 202110121001101. The reversal of 202110121001100 is 1100121011202.

It is a super-2 number, since 2×202110121001100² (a number of 29 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is not an unprimeable number, because it can be changed into a prime (202110121001101) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25911550075 + ... + 25911557874.

Almost surely, 2^{202110121001100} is an apocalyptic number.

202110121001100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202110121001100 is an abundant number, since it is smaller than the sum of its proper divisors (427644286807300).

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

202110121001100 is a wasteful number, since it uses less digits than its factorization.

202110121001100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51823107979 (or 51823107972 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 202110121001100 its reverse (1100121011202), we get a palindrome (203210242012302).

The spelling of 202110121001100 in words is "two hundred two trillion, one hundred ten billion, one hundred twenty-one million, one thousand, one hundred".