21050201292 has 24 divisors (see below), whose sum is σ = 49243412400. Its totient is φ = 6998694336.

The previous prime is 21050201279. The next prime is 21050201297. The reversal of 21050201292 is 29210205012.

It is a super-2 number, since 2×21050201292² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21050201297) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2250067 + ... + 2259402.

It is an arithmetic number, because the mean of its divisors is an integer number (2051808850).

Almost surely, 2^21050201292 is an apocalyptic number.

It is an amenable number.

21050201292 is an abundant number, since it is smaller than the sum of its proper divisors (28193211108).

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

21050201292 is a wasteful number, since it uses less digits than its factorization.

21050201292 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4509865 (or 4509863 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The spelling of 21050201292 in words is "twenty-one billion, fifty million, two hundred one thousand, two hundred ninety-two".