2012120220021 has 8 divisors (see below), whose sum is σ = 2799471610560. Its totient is φ = 1283091154752.

The previous prime is 2012120220013. The next prime is 2012120220043. The reversal of 2012120220021 is 1200220212102.

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

It is not a de Polignac number, because 2012120220021 - 2³ = 2012120220013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2012120221021) 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, 14580581236 + ... + 14580581373.

It is an arithmetic number, because the mean of its divisors is an integer number (349933951320).

Almost surely, 2^{2012120220021} is an apocalyptic number.

It is an amenable number.

2012120220021 is a deficient number, since it is larger than the sum of its proper divisors (787351390539).

2012120220021 is a wasteful number, since it uses less digits than its factorization.

2012120220021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29161162635.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 2012120220021 its reverse (1200220212102), we get a palindrome (3212340432123).

The spelling of 2012120220021 in words is "two trillion, twelve billion, one hundred twenty million, two hundred twenty thousand, twenty-one".