20120211212021 has 8 divisors (see below), whose sum is σ = 20995846199424. Its totient is φ = 19244646490960.

The previous prime is 20120211211909. The next prime is 20120211212033. The reversal of 20120211212021 is 12021211202102.

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

It is a cyclic number.

It is not a de Polignac number, because 20120211212021 - 2²² = 20120207017717 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20120211212921) 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, 16981025 + ... + 18127206.

It is an arithmetic number, because the mean of its divisors is an integer number (2624480774928).

Almost surely, 2^{20120211212021} is an apocalyptic number.

It is an amenable number.

20120211212021 is a deficient number, since it is larger than the sum of its proper divisors (875634987403).

20120211212021 is a wasteful number, since it uses less digits than its factorization.

20120211212021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35133171.

The product of its (nonzero) digits is 64, while the sum is 17.

Adding to 20120211212021 its reverse (12021211202102), we get a palindrome (32141422414123).

The spelling of 20120211212021 in words is "twenty trillion, one hundred twenty billion, two hundred eleven million, two hundred twelve thousand, twenty-one".