20211202102102 has 64 divisors (see below), whose sum is σ = 35200209139200. Its totient is φ = 8606930400000.

The previous prime is 20211202102097. The next prime is 20211202102103. The reversal of 20211202102102 is 20120120211202.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20211202102103) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35135602 + ... + 35706202.

It is an arithmetic number, because the mean of its divisors is an integer number (550003267800).

Almost surely, 2^{20211202102102} is an apocalyptic number.

20211202102102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20211202102102 is a deficient number, since it is larger than the sum of its proper divisors (14989007037098).

20211202102102 is a wasteful number, since it uses less digits than its factorization.

20211202102102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571573.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 20211202102102 its reverse (20120120211202), we get a palindrome (40331322313304).

The spelling of 20211202102102 in words is "twenty trillion, two hundred eleven billion, two hundred two million, one hundred two thousand, one hundred two".