31010122002221 has 8 divisors (see below), whose sum is σ = 31127716219488. Its totient is φ = 30892671810000.

The previous prime is 31010122002217. The next prime is 31010122002257. The reversal of 31010122002221 is 12220022101013.

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

It is a cyclic number.

It is not a de Polignac number, because 31010122002221 - 2² = 31010122002217 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31010122002221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31010122005221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35574815 + ... + 36436076.

It is an arithmetic number, because the mean of its divisors is an integer number (3890964527436).

Almost surely, 2^{31010122002221} is an apocalyptic number.

It is an amenable number.

31010122002221 is a deficient number, since it is larger than the sum of its proper divisors (117594217267).

31010122002221 is a wasteful number, since it uses less digits than its factorization.

31010122002221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72012523.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 31010122002221 its reverse (12220022101013), we get a palindrome (43230144103234).

The spelling of 31010122002221 in words is "thirty-one trillion, ten billion, one hundred twenty-two million, two thousand, two hundred twenty-one".