22021140402 has 48 divisors (see below), whose sum is σ = 48342261240. Its totient is φ = 7243923456.

The previous prime is 22021140373. The next prime is 22021140419. The reversal of 22021140402 is 20404112022.

22021140402 is a `hidden beast` number, since 220 + 2 + 1 + 1 + 40 + 402 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 10481869161 + 11539271241 = 102381^2 + 107421^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 598474 + ... + 634202.

Almost surely, 2^22021140402 is an apocalyptic number.

22021140402 is an abundant number, since it is smaller than the sum of its proper divisors (26321120838).

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

22021140402 is a wasteful number, since it uses less digits than its factorization.

22021140402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36187 (or 36184 counting only the distinct ones).

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

Adding to 22021140402 its reverse (20404112022), we get a palindrome (42425252424).

The spelling of 22021140402 in words is "twenty-two billion, twenty-one million, one hundred forty thousand, four hundred two".