20111220122 has 8 divisors (see below), whose sum is σ = 34476377376. Its totient is φ = 8619094332.

The previous prime is 20111220119. The next prime is 20111220127. The reversal of 20111220122 is 22102211102.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×20111220122² (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), and also a Moran number because the ratio is a prime number: 1436515723 = 20111220122 / (2 + 0 + 1 + 1 + 1 + 2 + 2 + 0 + 1 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 20111220097 and 20111220106.

It is not an unprimeable number, because it can be changed into a prime (20111220127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 718257848 + ... + 718257875.

It is an arithmetic number, because the mean of its divisors is an integer number (4309547172).

Almost surely, 2^20111220122 is an apocalyptic number.

20111220122 is a deficient number, since it is larger than the sum of its proper divisors (14365157254).

20111220122 is a wasteful number, since it uses less digits than its factorization.

20111220122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1436515732.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 20111220122 its reverse (22102211102), we get a palindrome (42213431224).

The spelling of 20111220122 in words is "twenty billion, one hundred eleven million, two hundred twenty thousand, one hundred twenty-two".