2121020213310 has 96 divisors (see below), whose sum is σ = 5727335065920. Its totient is φ = 544135325184.

The previous prime is 2121020213297. The next prime is 2121020213327. The reversal of 2121020213310 is 133120201212.

2121020213310 is a `hidden beast` number, since 2 + 121 + 0 + 20 + 213 + 310 = 666.

It is a super-2 number, since 2×2121020213310² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3281962 + ... + 3874701.

It is an arithmetic number, because the mean of its divisors is an integer number (59659740270).

Almost surely, 2^{2121020213310} is an apocalyptic number.

2121020213310 is an abundant number, since it is smaller than the sum of its proper divisors (3606314852610).

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

2121020213310 is a wasteful number, since it uses less digits than its factorization.

2121020213310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7156802 (or 7156799 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 2121020213310 its reverse (133120201212), we get a palindrome (2254140414522).

The spelling of 2121020213310 in words is "two trillion, one hundred twenty-one billion, twenty million, two hundred thirteen thousand, three hundred ten".