122111100010 has 32 divisors (see below), whose sum is σ = 220579801344. Its totient is φ = 48671304000.

The previous prime is 122111099987. The next prime is 122111100029. The reversal of 122111100010 is 10001111221.

It is a super-2 number, since 2×122111100010² (a number of 23 digits) contains 22 as substring.

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

It is a self number, because there is not a number n which added to its sum of digits gives 122111100010.

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, 7078095 + ... + 7095325.

It is an arithmetic number, because the mean of its divisors is an integer number (6893118792).

Almost surely, 2^122111100010 is an apocalyptic number.

122111100010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

122111100010 is a deficient number, since it is larger than the sum of its proper divisors (98468701334).

122111100010 is a wasteful number, since it uses less digits than its factorization.

122111100010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19710.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 122111100010 its reverse (10001111221), we get a palindrome (132112211231).

The spelling of 122111100010 in words is "one hundred twenty-two billion, one hundred eleven million, one hundred thousand, ten".