21023100020134 has 16 divisors (see below), whose sum is σ = 31712163346800. Its totient is φ = 10452383875584.

The previous prime is 21023100020123. The next prime is 21023100020177. The reversal of 21023100020134 is 43102000132012.

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 7 ways as a sum of consecutive naturals, for example, 7310062 + ... + 9771550.

It is an arithmetic number, because the mean of its divisors is an integer number (1982010209175).

Almost surely, 2^{21023100020134} is an apocalyptic number.

21023100020134 is a deficient number, since it is larger than the sum of its proper divisors (10689063326666).

21023100020134 is a wasteful number, since it uses less digits than its factorization.

21023100020134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2485527.

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 21023100020134 its reverse (43102000132012), we get a palindrome (64125100152146).

The spelling of 21023100020134 in words is "twenty-one trillion, twenty-three billion, one hundred million, twenty thousand, one hundred thirty-four".