20120012211021 has 8 divisors (see below), whose sum is σ = 27281372489760. Its totient is φ = 13185996703152.

The previous prime is 20120012211017. The next prime is 20120012211029. The reversal of 20120012211021 is 12011221002102.

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

It is not a de Polignac number, because 20120012211021 - 2² = 20120012211017 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120012211029) 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, 56836192510 + ... + 56836192863.

It is an arithmetic number, because the mean of its divisors is an integer number (3410171561220).

Almost surely, 2^{20120012211021} is an apocalyptic number.

It is an amenable number.

20120012211021 is a deficient number, since it is larger than the sum of its proper divisors (7161360278739).

20120012211021 is a wasteful number, since it uses less digits than its factorization.

20120012211021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113672385435.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 20120012211021 its reverse (12011221002102), we get a palindrome (32131233213123).

The spelling of 20120012211021 in words is "twenty trillion, one hundred twenty billion, twelve million, two hundred eleven thousand, twenty-one".