22101301231212 has 48 divisors (see below), whose sum is σ = 58940973658112. Its totient is φ = 6314210668800.

The previous prime is 22101301231133. The next prime is 22101301231253. The reversal of 22101301231212 is 21213210310122.

It is a super-2 number, since 2×22101301231212² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8113789 + ... + 10489812.

Almost surely, 2^{22101301231212} is an apocalyptic number.

It is an amenable number.

22101301231212 is an abundant number, since it is smaller than the sum of its proper divisors (36839672426900).

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

22101301231212 is a wasteful number, since it uses less digits than its factorization.

22101301231212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18617758 (or 18617756 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

Adding to 22101301231212 its reverse (21213210310122), we get a palindrome (43314511541334).

The spelling of 22101301231212 in words is "twenty-two trillion, one hundred one billion, three hundred one million, two hundred thirty-one thousand, two hundred twelve".