31220122002 has 16 divisors (see below), whose sum is σ = 62916888672. Its totient is φ = 10327266560.

The previous prime is 31220121991. The next prime is 31220122027. The reversal of 31220122002 is 20022102213.

It is a happy 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, 19859343 + ... + 19860914.

It is an arithmetic number, because the mean of its divisors is an integer number (3932305542).

Almost surely, 2^31220122002 is an apocalyptic number.

31220122002 is an abundant number, since it is smaller than the sum of its proper divisors (31696766670).

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

31220122002 is a wasteful number, since it uses less digits than its factorization.

31220122002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39720393.

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

Adding to 31220122002 its reverse (20022102213), we get a palindrome (51242224215).

The spelling of 31220122002 in words is "thirty-one billion, two hundred twenty million, one hundred twenty-two thousand, two".