20020120210 has 32 divisors (see below), whose sum is σ = 39187249200. Its totient is φ = 7333281792.

The previous prime is 20020120177. The next prime is 20020120243. The reversal of 20020120210 is 1202102002.

It is an interprime number because it is at equal distance from previous prime (20020120177) and next prime (20020120243).

It can be written as a sum of positive squares in 8 ways, for example, as 8351583769 + 11668536441 = 91387^2 + 108021^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

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, 1585135 + ... + 1597714.

Almost surely, 2^20020120210 is an apocalyptic number.

20020120210 is a deficient number, since it is larger than the sum of its proper divisors (19167128990).

20020120210 is a wasteful number, since it uses less digits than its factorization.

20020120210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3182910.

The product of its (nonzero) digits is 16, while the sum is 10.

Adding to 20020120210 its reverse (1202102002), we get a palindrome (21222222212).

The spelling of 20020120210 in words is "twenty billion, twenty million, one hundred twenty thousand, two hundred ten".