20210401212 has 48 divisors (see below), whose sum is σ = 47433103872. Its totient is φ = 6697514880.

The previous prime is 20210401153. The next prime is 20210401259. The reversal of 20210401212 is 21210401202.

It is a super-2 number, since 2×20210401212² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 20210401191 and 20210401200.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2611693 + ... + 2619419.

It is an arithmetic number, because the mean of its divisors is an integer number (988189664).

Almost surely, 2^20210401212 is an apocalyptic number.

It is an amenable number.

20210401212 is an abundant number, since it is smaller than the sum of its proper divisors (27222702660).

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

20210401212 is a wasteful number, since it uses less digits than its factorization.

20210401212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8978 (or 8976 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20210401212 its reverse (21210401202), we get a palindrome (41420802414).

The spelling of 20210401212 in words is "twenty billion, two hundred ten million, four hundred one thousand, two hundred twelve".