22021219950 has 24 divisors (see below), whose sum is σ = 54612625848. Its totient is φ = 5872325280.

The previous prime is 22021219939. The next prime is 22021219951. The reversal of 22021219950 is 5991212022.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22021219951) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73403917 + ... + 73404216.

It is an arithmetic number, because the mean of its divisors is an integer number (2275526077).

Almost surely, 2^22021219950 is an apocalyptic number.

22021219950 is an abundant number, since it is smaller than the sum of its proper divisors (32591405898).

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

22021219950 is a wasteful number, since it uses less digits than its factorization.

22021219950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146808148 (or 146808143 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 33.

The spelling of 22021219950 in words is "twenty-two billion, twenty-one million, two hundred nineteen thousand, nine hundred fifty".