210120021222001 has 32 divisors (see below), whose sum is σ = 247256330582016. Its totient is φ = 176439524640000.

The previous prime is 210120021221993. The next prime is 210120021222079. The reversal of 210120021222001 is 100222120021012.

It is a happy number.

210120021222001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 210120021222001 - 2³ = 210120021221993 is a prime.

It is a super-2 number, since 2×210120021222001² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (210120021222101) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 42483445 + ... + 47170786.

It is an arithmetic number, because the mean of its divisors is an integer number (7726760330688).

Almost surely, 2^{210120021222001} is an apocalyptic number.

It is an amenable number.

210120021222001 is a deficient number, since it is larger than the sum of its proper divisors (37136309360015).

210120021222001 is a wasteful number, since it uses less digits than its factorization.

210120021222001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 89654493.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 210120021222001 its reverse (100222120021012), we get a palindrome (310342141243013).

The spelling of 210120021222001 in words is "two hundred ten trillion, one hundred twenty billion, twenty-one million, two hundred twenty-two thousand, one".