212022001020 has 48 divisors (see below), whose sum is σ = 600814166400. Its totient is φ = 55858003776.

The previous prime is 212022001003. The next prime is 212022001027. The reversal of 212022001020 is 20100220212.

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

It is a junction number, because it is equal to n+sod(n) for n = 212022000987 and 212022001005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212022001027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21282370 + ... + 21292329.

It is an arithmetic number, because the mean of its divisors is an integer number (12516961800).

Almost surely, 2^212022001020 is an apocalyptic number.

212022001020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212022001020 is an abundant number, since it is smaller than the sum of its proper divisors (388792165380).

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

212022001020 is a wasteful number, since it uses less digits than its factorization.

212022001020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42574794 (or 42574792 counting only the distinct ones).

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

Adding to 212022001020 its reverse (20100220212), we get a palindrome (232122221232).

The spelling of 212022001020 in words is "two hundred twelve billion, twenty-two million, one thousand, twenty".