21101000023202 has 16 divisors (see below), whose sum is σ = 34573577861952. Its totient is φ = 9578955665520.

The previous prime is 21101000023171. The next prime is 21101000023217. The reversal of 21101000023202 is 20232000010112.

It is a happy number.

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, 620381678 + ... + 620415689.

It is an arithmetic number, because the mean of its divisors is an integer number (2160848616372).

Almost surely, 2^{21101000023202} is an apocalyptic number.

21101000023202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21101000023202 is a deficient number, since it is larger than the sum of its proper divisors (13472577838750).

21101000023202 is a wasteful number, since it uses less digits than its factorization.

21101000023202 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1240798153.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 21101000023202 its reverse (20232000010112), we get a palindrome (41333000033314).

The spelling of 21101000023202 in words is "twenty-one trillion, one hundred one billion, twenty-three thousand, two hundred two".