20101122010 has 32 divisors (see below), whose sum is σ = 38463465600. Its totient is φ = 7541841600.

The previous prime is 20101121987. The next prime is 20101122017. The reversal of 20101122010 is 1022110102.

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 (20101122017) 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, 504550 + ... + 542929.

It is an arithmetic number, because the mean of its divisors is an integer number (1201983300).

Almost surely, 2^20101122010 is an apocalyptic number.

20101122010 is a deficient number, since it is larger than the sum of its proper divisors (18362343590).

20101122010 is a wasteful number, since it uses less digits than its factorization.

20101122010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1047606.

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

Adding to 20101122010 its reverse (1022110102), we get a palindrome (21123232112).

The spelling of 20101122010 in words is "twenty billion, one hundred one million, one hundred twenty-two thousand, ten".