202212211212 has 120 divisors (see below), whose sum is σ = 576928032912. Its totient is φ = 61249996800.

The previous prime is 202212211199. The next prime is 202212211237. The reversal of 202212211212 is 212112212202.

It is a happy number.

202212211212 is a `hidden beast` number, since 20 + 221 + 2 + 211 + 212 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 9230512 + ... + 9252392.

Almost surely, 2^202212211212 is an apocalyptic number.

202212211212 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 202212211212, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (288464016456).

202212211212 is an abundant number, since it is smaller than the sum of its proper divisors (374715821700).

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

202212211212 is a wasteful number, since it uses less digits than its factorization.

202212211212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24501 (or 24490 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 202212211212 its reverse (212112212202), we get a palindrome (414324423414).

The spelling of 202212211212 in words is "two hundred two billion, two hundred twelve million, two hundred eleven thousand, two hundred twelve".