20110122010 has 16 divisors (see below), whose sum is σ = 39488967072. Its totient is φ = 7312771600.

The previous prime is 20110121971. The next prime is 20110122017. The reversal of 20110122010 is 1022101102.

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

It is not an unprimeable number, because it can be changed into a prime (20110122017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91409536 + ... + 91409755.

It is an arithmetic number, because the mean of its divisors is an integer number (2468060442).

Almost surely, 2^20110122010 is an apocalyptic number.

20110122010 is a deficient number, since it is larger than the sum of its proper divisors (19378845062).

20110122010 is a wasteful number, since it uses less digits than its factorization.

20110122010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182819309.

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

Adding to 20110122010 its reverse (1022101102), we get a palindrome (21132223112).

The spelling of 20110122010 in words is "twenty billion, one hundred ten million, one hundred twenty-two thousand, ten".