212753129 has 4 divisors (see below), whose sum is σ = 214741584. Its totient is φ = 210764676.

The previous prime is 212753117. The next prime is 212753131. The reversal of 212753129 is 921357212.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 212753129 - 2⁸ = 212752873 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 212753095 and 212753104.

It is not an unprimeable number, because it can be changed into a prime (212753729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 994067 + ... + 994280.

It is an arithmetic number, because the mean of its divisors is an integer number (53685396).

Almost surely, 2^212753129 is an apocalyptic number.

It is an amenable number.

212753129 is a deficient number, since it is larger than the sum of its proper divisors (1988455).

212753129 is a wasteful number, since it uses less digits than its factorization.

212753129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1988454.

The product of its digits is 7560, while the sum is 32.

The square root of 212753129 is about 14586.0594061590. The cubic root of 212753129 is about 596.9784472035.

The spelling of 212753129 in words is "two hundred twelve million, seven hundred fifty-three thousand, one hundred twenty-nine".