210121011130030 has 128 divisors (see below), whose sum is σ = 509272004505600. Its totient is φ = 60281174039040.

The previous prime is 210121011130013. The next prime is 210121011130033. The reversal of 210121011130030 is 30031110121012.

It is a happy number.

It is a super-2 number, since 2×210121011130030² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 210121011129986 and 210121011130013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (210121011130033) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 26579734 + ... + 33566713.

It is an arithmetic number, because the mean of its divisors is an integer number (3978687535200).

Almost surely, 2^{210121011130030} is an apocalyptic number.

210121011130030 is an abundant number, since it is smaller than the sum of its proper divisors (299150993375570).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

210121011130030 is a wasteful number, since it uses less digits than its factorization.

210121011130030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60146834.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 210121011130030 its reverse (30031110121012), we get a palindrome (240152121251042).

The spelling of 210121011130030 in words is "two hundred ten trillion, one hundred twenty-one billion, eleven million, one hundred thirty thousand, thirty".