212010102121 has 4 divisors (see below), whose sum is σ = 221227932672. Its totient is φ = 202792271572.

The previous prime is 212010102119. The next prime is 212010102137. The reversal of 212010102121 is 121201010212.

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 212010102121 - 2¹ = 212010102119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212010100121) 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, 4608915241 + ... + 4608915286.

It is an arithmetic number, because the mean of its divisors is an integer number (55306983168).

Almost surely, 2^212010102121 is an apocalyptic number.

It is an amenable number.

212010102121 is a deficient number, since it is larger than the sum of its proper divisors (9217830551).

212010102121 is an equidigital number, since it uses as much as digits as its factorization.

212010102121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9217830550.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 212010102121 its reverse (121201010212), we get a palindrome (333211112333).

The spelling of 212010102121 in words is "two hundred twelve billion, ten million, one hundred two thousand, one hundred twenty-one".