20101122230 has 16 divisors (see below), whose sum is σ = 41350880160. Its totient is φ = 6891813312.

The previous prime is 20101122229. The next prime is 20101122241. The reversal of 20101122230 is 3222110102.

It is a happy number.

It is a super-2 number, since 2×20101122230² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 143579375 + ... + 143579514.

It is an arithmetic number, because the mean of its divisors is an integer number (2584430010).

Almost surely, 2^20101122230 is an apocalyptic number.

20101122230 is an abundant number, since it is smaller than the sum of its proper divisors (21249757930).

20101122230 is a wasteful number, since it uses less digits than its factorization.

20101122230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287158903.

The product of its (nonzero) digits is 48, while the sum is 14.

Adding to 20101122230 its reverse (3222110102), we get a palindrome (23323232332).

The spelling of 20101122230 in words is "twenty billion, one hundred one million, one hundred twenty-two thousand, two hundred thirty".