22201231232312 has 64 divisors (see below), whose sum is σ = 47403390101760. Its totient is φ = 9649172332800.

The previous prime is 22201231232303. The next prime is 22201231232321. The reversal of 22201231232312 is 21323213210222.

It is an interprime number because it is at equal distance from previous prime (22201231232303) and next prime (22201231232321).

It is a super-2 number, since 2×22201231232312² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

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, 3519308 + ... + 7535780.

It is an arithmetic number, because the mean of its divisors is an integer number (740677970340).

Almost surely, 2^{22201231232312} is an apocalyptic number.

22201231232312 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22201231232312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23701695050880).

22201231232312 is an abundant number, since it is smaller than the sum of its proper divisors (25202158869448).

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

22201231232312 is a wasteful number, since it uses less digits than its factorization.

22201231232312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4019244 (or 4019240 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

Adding to 22201231232312 its reverse (21323213210222), we get a palindrome (43524444442534).

The spelling of 22201231232312 in words is "twenty-two trillion, two hundred one billion, two hundred thirty-one million, two hundred thirty-two thousand, three hundred twelve".