21121200001202 has 64 divisors (see below), whose sum is σ = 36443981223936. Its totient is φ = 8993080736640.

The previous prime is 21121200001201. The next prime is 21121200001301. The reversal of 21121200001202 is 20210000212112.

It is a super-2 number, since 2×21121200001202² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is not an unprimeable number, because it can be changed into a prime (21121200001201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3516094883 + ... + 3516100889.

It is an arithmetic number, because the mean of its divisors is an integer number (569437206624).

Almost surely, 2^{21121200001202} is an apocalyptic number.

21121200001202 is a deficient number, since it is larger than the sum of its proper divisors (15322781222734).

21121200001202 is a wasteful number, since it uses less digits than its factorization.

21121200001202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8391.

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 21121200001202 its reverse (20210000212112), we get a palindrome (41331200213314).

The spelling of 21121200001202 in words is "twenty-one trillion, one hundred twenty-one billion, two hundred million, one thousand, two hundred two".