21101050500342 has 32 divisors (see below), whose sum is σ = 44819576325504. Its totient is φ = 6599937590400.

The previous prime is 21101050500319. The next prime is 21101050500349. The reversal of 21101050500342 is 24300505010112.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21101050500349) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 312463284 + ... + 312530807.

It is an arithmetic number, because the mean of its divisors is an integer number (1400611760172).

Almost surely, 2^{21101050500342} is an apocalyptic number.

21101050500342 is an abundant number, since it is smaller than the sum of its proper divisors (23718525825162).

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

21101050500342 is a wasteful number, since it uses less digits than its factorization.

21101050500342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 624994444.

The product of its (nonzero) digits is 1200, while the sum is 24.

Adding to 21101050500342 its reverse (24300505010112), we get a palindrome (45401555510454).

The spelling of 21101050500342 in words is "twenty-one trillion, one hundred one billion, fifty million, five hundred thousand, three hundred forty-two".