22021402140 has 36 divisors (see below), whose sum is σ = 66798253704. Its totient is φ = 5872373856.

The previous prime is 22021402087. The next prime is 22021402157. The reversal of 22021402140 is 4120412022.

22021402140 is a `hidden beast` number, since 220 + 2 + 1 + 402 + 1 + 40 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61170382 + ... + 61170741.

Almost surely, 2^22021402140 is an apocalyptic number.

22021402140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

22021402140 is an abundant number, since it is smaller than the sum of its proper divisors (44776851564).

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

22021402140 is a wasteful number, since it uses less digits than its factorization.

22021402140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122341138 (or 122341133 counting only the distinct ones).

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

Adding to 22021402140 its reverse (4120412022), we get a palindrome (26141814162).

The spelling of 22021402140 in words is "twenty-two billion, twenty-one million, four hundred two thousand, one hundred forty".