20131220022 has 8 divisors (see below), whose sum is σ = 40262440056. Its totient is φ = 6710406672.

The previous prime is 20131220017. The next prime is 20131220023. The reversal of 20131220022 is 22002213102.

It is a happy number.

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

20131220022 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 20131219983 and 20131220010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20131220023) 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, 1677601663 + ... + 1677601674.

It is an arithmetic number, because the mean of its divisors is an integer number (5032805007).

Almost surely, 2^20131220022 is an apocalyptic number.

20131220022 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20131220022 is a wasteful number, since it uses less digits than its factorization.

20131220022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3355203342.

The product of its (nonzero) digits is 96, while the sum is 15.

Adding to 20131220022 its reverse (22002213102), we get a palindrome (42133433124).

The spelling of 20131220022 in words is "twenty billion, one hundred thirty-one million, two hundred twenty thousand, twenty-two".