22211220402 has 48 divisors (see below), whose sum is σ = 55029566592. Its totient is φ = 6342560640.

The previous prime is 22211220329. The next prime is 22211220407. The reversal of 22211220402 is 20402211222.

22211220402 is a `hidden beast` number, since 22 + 21 + 1 + 220 + 402 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (22211220407) 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, 185002 + ... + 280442.

It is an arithmetic number, because the mean of its divisors is an integer number (1146449304).

Almost surely, 2^22211220402 is an apocalyptic number.

22211220402 is an abundant number, since it is smaller than the sum of its proper divisors (32818346190).

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

22211220402 is a wasteful number, since it uses less digits than its factorization.

22211220402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97303 (or 97300 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 18.

Adding to 22211220402 its reverse (20402211222), we get a palindrome (42613431624).

The spelling of 22211220402 in words is "twenty-two billion, two hundred eleven million, two hundred twenty thousand, four hundred two".