20212145404 has 48 divisors (see below), whose sum is σ = 39487101696. Its totient is φ = 9050054640.

The previous prime is 20212145389. The next prime is 20212145407. The reversal of 20212145404 is 40454121202.

It is a super-3 number, since 3×20212145404³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20212145407) 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, 328377 + ... + 385039.

It is an arithmetic number, because the mean of its divisors is an integer number (822647952).

Almost surely, 2^20212145404 is an apocalyptic number.

It is an amenable number.

20212145404 is a deficient number, since it is larger than the sum of its proper divisors (19274956292).

20212145404 is a wasteful number, since it uses less digits than its factorization.

20212145404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56767 (or 56743 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 25.

Adding to 20212145404 its reverse (40454121202), we get a palindrome (60666266606).

The spelling of 20212145404 in words is "twenty billion, two hundred twelve million, one hundred forty-five thousand, four hundred four".