21121340013202 has 128 divisors (see below), whose sum is σ = 37572392712960. Its totient is φ = 8778916823040.

The previous prime is 21121340013187. The next prime is 21121340013223. The reversal of 21121340013202 is 20231004312112.

It is a super-2 number, since 2×21121340013202² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 19324189768 + ... + 19324190860.

It is an arithmetic number, because the mean of its divisors is an integer number (293534318070).

Almost surely, 2^{21121340013202} is an apocalyptic number.

21121340013202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21121340013202 is a deficient number, since it is larger than the sum of its proper divisors (16451052699758).

21121340013202 is a wasteful number, since it uses less digits than its factorization.

21121340013202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2588.

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 21121340013202 its reverse (20231004312112), we get a palindrome (41352344325314).

The spelling of 21121340013202 in words is "twenty-one trillion, one hundred twenty-one billion, three hundred forty million, thirteen thousand, two hundred two".