31110102220212 has 120 divisors (see below), whose sum is σ = 81908271737600. Its totient is φ = 10296283745664.

The previous prime is 31110102220177. The next prime is 31110102220217. The reversal of 31110102220212 is 21202220101113.

31110102220212 is a `hidden beast` number, since 311 + 10 + 102 + 220 + 21 + 2 = 666.

It is a super-2 number, since 2×31110102220212² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31110102220217) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 26815464 + ... + 27951552.

Almost surely, 2^{31110102220212} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31110102220212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40954135868800).

31110102220212 is an abundant number, since it is smaller than the sum of its proper divisors (50798169517388).

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

31110102220212 is a wasteful number, since it uses less digits than its factorization.

31110102220212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1136707 (or 1136696 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 31110102220212 its reverse (21202220101113), we get a palindrome (52312322321325).

The spelling of 31110102220212 in words is "thirty-one trillion, one hundred ten billion, one hundred two million, two hundred twenty thousand, two hundred twelve".