2012101220121 has 4 divisors (see below), whose sum is σ = 2682801626832. Its totient is φ = 1341400813412.

The previous prime is 2012101220111. The next prime is 2012101220131. The reversal of 2012101220121 is 1210221012102.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (2012101220111) and next prime (2012101220131).

It is a cyclic number.

It is not a de Polignac number, because 2012101220121 - 2⁶ = 2012101220057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2012101220121.

It is not an unprimeable number, because it can be changed into a prime (2012101220111) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 335350203351 + ... + 335350203356.

It is an arithmetic number, because the mean of its divisors is an integer number (670700406708).

Almost surely, 2^{2012101220121} is an apocalyptic number.

It is an amenable number.

2012101220121 is a deficient number, since it is larger than the sum of its proper divisors (670700406711).

2012101220121 is an equidigital number, since it uses as much as digits as its factorization.

2012101220121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 670700406710.

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

Adding to 2012101220121 its reverse (1210221012102), we get a palindrome (3222322232223).

The spelling of 2012101220121 in words is "two trillion, twelve billion, one hundred one million, two hundred twenty thousand, one hundred twenty-one".