21220095050 has 48 divisors (see below), whose sum is σ = 49208582592. Its totient is φ = 6614054400.

The previous prime is 21220094999. The next prime is 21220095059. The reversal of 21220095050 is 5059002212.

It is not an unprimeable number, because it can be changed into a prime (21220095059) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2752007 + ... + 2759706.

It is an arithmetic number, because the mean of its divisors is an integer number (1025178804).

Almost surely, 2^21220095050 is an apocalyptic number.

21220095050 is an abundant number, since it is smaller than the sum of its proper divisors (27988487542).

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

21220095050 is a wasteful number, since it uses less digits than its factorization.

21220095050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5511743 (or 5511738 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

Adding to 21220095050 its reverse (5059002212), we get a palindrome (26279097262).

The spelling of 21220095050 in words is "twenty-one billion, two hundred twenty million, ninety-five thousand, fifty".