21507055010102 has 8 divisors (see below), whose sum is σ = 32260727809776. Its totient is φ = 10753479073512.

The previous prime is 21507055010071. The next prime is 21507055010137. The reversal of 21507055010102 is 20101055070512.

It is a sphenic number, since it is the product of 3 distinct primes.

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, 23658113 + ... + 24550364.

It is an arithmetic number, because the mean of its divisors is an integer number (4032590976222).

Almost surely, 2^{21507055010102} is an apocalyptic number.

21507055010102 is a deficient number, since it is larger than the sum of its proper divisors (10753672799674).

21507055010102 is a wasteful number, since it uses less digits than its factorization.

21507055010102 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48431542.

The product of its (nonzero) digits is 3500, while the sum is 29.

The spelling of 21507055010102 in words is "twenty-one trillion, five hundred seven billion, fifty-five million, ten thousand, one hundred two".