212220120000001 has 4 divisors (see below), whose sum is σ = 217155471627952. Its totient is φ = 207284768372052.

The previous prime is 212220119999999. The next prime is 212220120000041. The reversal of 212220120000001 is 100000021022212.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 212220120000001 - 2¹ = 212220119999999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (212220120000041) 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, 2467675813911 + ... + 2467675813996.

It is an arithmetic number, because the mean of its divisors is an integer number (54288867906988).

Almost surely, 2^{212220120000001} is an apocalyptic number.

It is an amenable number.

212220120000001 is a deficient number, since it is larger than the sum of its proper divisors (4935351627951).

212220120000001 is an equidigital number, since it uses as much as digits as its factorization.

212220120000001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4935351627950.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 212220120000001 its reverse (100000021022212), we get a palindrome (312220141022213).

The spelling of 212220120000001 in words is "two hundred twelve trillion, two hundred twenty billion, one hundred twenty million, one", and thus it is an aban number.