210121112223031 has 8 divisors (see below), whose sum is σ = 215719903208304. Its totient is φ = 204582848708160.

The previous prime is 210121112223023. The next prime is 210121112223041. The reversal of 210121112223031 is 130322211121012.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 210121112223031 - 2³ = 210121112223023 is a prime.

It is a super-2 number, since 2×210121112223031² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 210121112222993 and 210121112223011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210121112223041) 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, 15131860566 + ... + 15131874451.

It is an arithmetic number, because the mean of its divisors is an integer number (26964987901038).

Almost surely, 2^{210121112223031} is an apocalyptic number.

210121112223031 is a deficient number, since it is larger than the sum of its proper divisors (5598790985273).

210121112223031 is a wasteful number, since it uses less digits than its factorization.

210121112223031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30263735201.

The product of its (nonzero) digits is 288, while the sum is 22.

Adding to 210121112223031 its reverse (130322211121012), we get a palindrome (340443323344043).

The spelling of 210121112223031 in words is "two hundred ten trillion, one hundred twenty-one billion, one hundred twelve million, two hundred twenty-three thousand, thirty-one".