210212122122021 has 16 divisors (see below), whose sum is σ = 296913758379200. Its totient is φ = 131919910357248.

The previous prime is 210212122121999. The next prime is 210212122122089. The reversal of 210212122122021 is 120221221212012.

It is not a de Polignac number, because 210212122122021 - 2⁶ = 210212122121957 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 (210212120122021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11744997316 + ... + 11745015213.

It is an arithmetic number, because the mean of its divisors is an integer number (18557109898700).

Almost surely, 2^{210212122122021} is an apocalyptic number.

It is an amenable number.

210212122122021 is a deficient number, since it is larger than the sum of its proper divisors (86701636257179).

210212122122021 is a wasteful number, since it uses less digits than its factorization.

210212122122021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23490012708.

The product of its (nonzero) digits is 256, while the sum is 21.

Adding to 210212122122021 its reverse (120221221212012), we get a palindrome (330433343334033).

The spelling of 210212122122021 in words is "two hundred ten trillion, two hundred twelve billion, one hundred twenty-two million, one hundred twenty-two thousand, twenty-one".