210213111031421 has 8 divisors (see below), whose sum is σ = 219353041484160. Its totient is φ = 201073199743152.

The previous prime is 210213111031393. The next prime is 210213111031571. The reversal of 210213111031421 is 124130111312012.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210213111031421 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210213111031321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20453840 + ... + 28961798.

It is an arithmetic number, because the mean of its divisors is an integer number (27419130185520).

Almost surely, 2^{210213111031421} is an apocalyptic number.

It is an amenable number.

210213111031421 is a deficient number, since it is larger than the sum of its proper divisors (9139930452739).

210213111031421 is a wasteful number, since it uses less digits than its factorization.

210213111031421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9582235.

The product of its (nonzero) digits is 288, while the sum is 23.

Adding to 210213111031421 its reverse (124130111312012), we get a palindrome (334343222343433).

The spelling of 210213111031421 in words is "two hundred ten trillion, two hundred thirteen billion, one hundred eleven million, thirty-one thousand, four hundred twenty-one".