212276702621 has 2 divisors, whose sum is σ = 212276702622. Its totient is φ = 212276702620.

The previous prime is 212276702557. The next prime is 212276702633. The reversal of 212276702621 is 126207672212.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 202577407396 + 9699295225 = 450086^2 + 98485^2 .

It is a cyclic number.

It is not a de Polignac number, because 212276702621 - 2⁶ = 212276702557 is a prime.

It is a super-2 number, since 2×212276702621² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (212276702681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106138351310 + 106138351311.

It is an arithmetic number, because the mean of its divisors is an integer number (106138351311).

Almost surely, 2^212276702621 is an apocalyptic number.

It is an amenable number.

212276702621 is a deficient number, since it is larger than the sum of its proper divisors (1).

212276702621 is an equidigital number, since it uses as much as digits as its factorization.

212276702621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56448, while the sum is 38.

The spelling of 212276702621 in words is "two hundred twelve billion, two hundred seventy-six million, seven hundred two thousand, six hundred twenty-one".