22020001212 has 48 divisors (see below), whose sum is σ = 56374964352. Its totient is φ = 6634150080.

The previous prime is 22020001169. The next prime is 22020001229. The reversal of 22020001212 is 21210002022.

It is a Harshad number since it is a multiple of its sum of digits (12).

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, 459298 + ... + 504969.

It is an arithmetic number, because the mean of its divisors is an integer number (1174478424).

Almost surely, 2^22020001212 is an apocalyptic number.

22020001212 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

22020001212 is an abundant number, since it is smaller than the sum of its proper divisors (34354963140).

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

22020001212 is a wasteful number, since it uses less digits than its factorization.

22020001212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964458 (or 964456 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 12.

Adding to 22020001212 its reverse (21210002022), we get a palindrome (43230003234).

The spelling of 22020001212 in words is "twenty-two billion, twenty million, one thousand, two hundred twelve".