20021022122 has 32 divisors (see below), whose sum is σ = 31744440000. Its totient is φ = 9459341568.

The previous prime is 20021022079. The next prime is 20021022127. The reversal of 20021022122 is 22122012002.

It is a super-2 number, since 2×20021022122² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20021022097 and 20021022106.

It is not an unprimeable number, because it can be changed into a prime (20021022127) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 334754 + ... + 390002.

It is an arithmetic number, because the mean of its divisors is an integer number (992013750).

Almost surely, 2^20021022122 is an apocalyptic number.

20021022122 is a deficient number, since it is larger than the sum of its proper divisors (11723417878).

20021022122 is a wasteful number, since it uses less digits than its factorization.

20021022122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55430.

The product of its (nonzero) digits is 64, while the sum is 14.

Adding to 20021022122 its reverse (22122012002), we get a palindrome (42143034124).

The spelling of 20021022122 in words is "twenty billion, twenty-one million, twenty-two thousand, one hundred twenty-two".