21050212103020 has 24 divisors (see below), whose sum is σ = 44476644474864. Its totient is φ = 8368427877696.

The previous prime is 21050212103017. The next prime is 21050212103047. The reversal of 21050212103020 is 2030121205012.

It is a super-2 number, since 2×21050212103020² (a number of 27 digits) contains 22 as substring.

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, 3228556879 + ... + 3228563398.

It is an arithmetic number, because the mean of its divisors is an integer number (1853193519786).

Almost surely, 2^{21050212103020} is an apocalyptic number.

21050212103020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21050212103020 is an abundant number, since it is smaller than the sum of its proper divisors (23426432371844).

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

21050212103020 is a wasteful number, since it uses less digits than its factorization.

21050212103020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6457120449 (or 6457120447 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 19.

Adding to 21050212103020 its reverse (2030121205012), we get a palindrome (23080333308032).

The spelling of 21050212103020 in words is "twenty-one trillion, fifty billion, two hundred twelve million, one hundred three thousand, twenty".