20200121110 has 64 divisors (see below), whose sum is σ = 40473022464. Its totient is φ = 7208496000.

The previous prime is 20200121107. The next prime is 20200121113. The reversal of 20200121110 is 1112100202.

It is an interprime number because it is at equal distance from previous prime (20200121107) and next prime (20200121113).

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20200121113) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3571785 + ... + 3577435.

It is an arithmetic number, because the mean of its divisors is an integer number (632390976).

Almost surely, 2^20200121110 is an apocalyptic number.

20200121110 is an abundant number, since it is smaller than the sum of its proper divisors (20272901354).

20200121110 is a wasteful number, since it uses less digits than its factorization.

20200121110 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6589.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 20200121110 its reverse (1112100202), we get a palindrome (21312221312).

The spelling of 20200121110 in words is "twenty billion, two hundred million, one hundred twenty-one thousand, one hundred ten".