20211001212 has 96 divisors (see below), whose sum is σ = 49944432384. Its totient is φ = 6352819200.

The previous prime is 20211001201. The next prime is 20211001243. The reversal of 20211001212 is 21210011202.

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 31 ways as a sum of consecutive naturals, for example, 2497012 + ... + 2505092.

It is an arithmetic number, because the mean of its divisors is an integer number (520254504).

Almost surely, 2^20211001212 is an apocalyptic number.

It is an amenable number.

20211001212 is an abundant number, since it is smaller than the sum of its proper divisors (29733431172).

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

20211001212 is a wasteful number, since it uses less digits than its factorization.

20211001212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8299 (or 8297 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 20211001212 its reverse (21210011202), we get a palindrome (41421012414).

The spelling of 20211001212 in words is "twenty billion, two hundred eleven million, one thousand, two hundred twelve".