20102212012121 has 8 divisors (see below), whose sum is σ = 20143464828480. Its totient is φ = 20060964308592.

The previous prime is 20102212012109. The next prime is 20102212012133. The reversal of 20102212012121 is 12121021220102.

It is an interprime number because it is at equal distance from previous prime (20102212012109) and next prime (20102212012133).

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 20102212012121 - 2¹⁴ = 20102211995737 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20102212012121.

It is not an unprimeable number, because it can be changed into a prime (20102212012171) 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, 6643610 + ... + 9183788.

It is an arithmetic number, because the mean of its divisors is an integer number (2517933103560).

Almost surely, 2^{20102212012121} is an apocalyptic number.

It is an amenable number.

20102212012121 is a deficient number, since it is larger than the sum of its proper divisors (41252816359).

20102212012121 is a wasteful number, since it uses less digits than its factorization.

20102212012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2556415.

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

Adding to 20102212012121 its reverse (12121021220102), we get a palindrome (32223233232223).

The spelling of 20102212012121 in words is "twenty trillion, one hundred two billion, two hundred twelve million, twelve thousand, one hundred twenty-one".