2100202121020 has 12 divisors (see below), whose sum is σ = 4410424454184. Its totient is φ = 840080848400.

The previous prime is 2100202121009. The next prime is 2100202121033. The reversal of 2100202121020 is 201212020012.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52505053006 + ... + 52505053045.

It is an arithmetic number, because the mean of its divisors is an integer number (367535371182).

Almost surely, 2^{2100202121020} is an apocalyptic number.

2100202121020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2100202121020 is an abundant number, since it is smaller than the sum of its proper divisors (2310222333164).

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

2100202121020 is a wasteful number, since it uses less digits than its factorization.

2100202121020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105010106060 (or 105010106058 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 2100202121020 its reverse (201212020012), we get a palindrome (2301414141032).

It can be divided in two parts, 2100202 and 121020, that added together give a palindrome (2221222).

The spelling of 2100202121020 in words is "two trillion, one hundred billion, two hundred two million, one hundred twenty-one thousand, twenty".