212046302151621 has 24 divisors (see below), whose sum is σ = 359505356547584. Its totient is φ = 117894469148640.

The previous prime is 212046302151601. The next prime is 212046302151721. The reversal of 212046302151621 is 126151203640212.

212046302151621 is a `hidden beast` number, since 2 + 1 + 2 + 0 + 4 + 6 + 3 + 0 + 21 + 5 + 1 + 621 = 666.

It is not a de Polignac number, because 212046302151621 - 2¹⁹ = 212046301627333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212046302151601) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 45483974965 + ... + 45483979626.

Almost surely, 2^{212046302151621} is an apocalyptic number.

212046302151621 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

212046302151621 is a deficient number, since it is larger than the sum of its proper divisors (147459054395963).

212046302151621 is a wasteful number, since it uses less digits than its factorization.

212046302151621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90967954641 (or 90967954638 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

Adding to 212046302151621 its reverse (126151203640212), we get a palindrome (338197505791833).

The spelling of 212046302151621 in words is "two hundred twelve trillion, forty-six billion, three hundred two million, one hundred fifty-one thousand, six hundred twenty-one".