210120221212001 has 16 divisors (see below), whose sum is σ = 213365507249664. Its totient is φ = 206903563206144.

The previous prime is 210120221211959. The next prime is 210120221212003. The reversal of 210120221212001 is 100212122021012.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-210120221212001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210120221212003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1274405 + ... + 20539341.

It is an arithmetic number, because the mean of its divisors is an integer number (13335344203104).

Almost surely, 2^{210120221212001} is an apocalyptic number.

It is an amenable number.

210120221212001 is a deficient number, since it is larger than the sum of its proper divisors (3245286037663).

210120221212001 is a wasteful number, since it uses less digits than its factorization.

210120221212001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19265680.

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

Adding to 210120221212001 its reverse (100212122021012), we get a palindrome (310332343233013).

The spelling of 210120221212001 in words is "two hundred ten trillion, one hundred twenty billion, two hundred twenty-one million, two hundred twelve thousand, one".