20021420026 has 32 divisors (see below), whose sum is σ = 31741943040. Its totient is φ = 9456772416.

The previous prime is 20021420011. The next prime is 20021420039. The reversal of 20021420026 is 62002412002.

It is a junction number, because it is equal to n+sod(n) for n = 20021419985 and 20021420012.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1119285 + ... + 1137031.

It is an arithmetic number, because the mean of its divisors is an integer number (991935720).

Almost surely, 2^20021420026 is an apocalyptic number.

20021420026 is a deficient number, since it is larger than the sum of its proper divisors (11720523014).

20021420026 is a wasteful number, since it uses less digits than its factorization.

20021420026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18198.

The product of its (nonzero) digits is 384, while the sum is 19.

Adding to 20021420026 its reverse (62002412002), we get a palindrome (82023832028).

The spelling of 20021420026 in words is "twenty billion, twenty-one million, four hundred twenty thousand, twenty-six".