20422021402 has 16 divisors (see below), whose sum is σ = 31986420480. Its totient is φ = 9760478992.

The previous prime is 20422021397. The next prime is 20422021421. The reversal of 20422021402 is 20412022402.

It is a super-3 number, since 3×20422021402³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 20422021402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80002 + ... + 217357.

It is an arithmetic number, because the mean of its divisors is an integer number (1999151280).

Almost surely, 2^20422021402 is an apocalyptic number.

20422021402 is a deficient number, since it is larger than the sum of its proper divisors (11564399078).

20422021402 is a wasteful number, since it uses less digits than its factorization.

20422021402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298877.

The product of its (nonzero) digits is 512, while the sum is 19.

Adding to 20422021402 its reverse (20412022402), we get a palindrome (40834043804).

The spelling of 20422021402 in words is "twenty billion, four hundred twenty-two million, twenty-one thousand, four hundred two".