890121201212001 has 32 divisors (see below), whose sum is σ = 1358396587339776. Its totient is φ = 513506774376000.

The previous prime is 890121201211997. The next prime is 890121201212003. The reversal of 890121201212001 is 100212102121098.

It is not a de Polignac number, because 890121201212001 - 2² = 890121201211997 is a prime.

It is a super-2 number, since 2×890121201212001² (a number of 31 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 890121201212001.

It is not an unprimeable number, because it can be changed into a prime (890121201212003) 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, 7131976131 + ... + 7132100936.

It is an arithmetic number, because the mean of its divisors is an integer number (42449893354368).

Almost surely, 2^{890121201212001} is an apocalyptic number.

It is an amenable number.

890121201212001 is a deficient number, since it is larger than the sum of its proper divisors (468275386127775).

890121201212001 is a wasteful number, since it uses less digits than its factorization.

890121201212001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14264077173.

The product of its (nonzero) digits is 1152, while the sum is 30.

Adding to 890121201212001 its reverse (100212102121098), we get a palindrome (990333303333099).

The spelling of 890121201212001 in words is "eight hundred ninety trillion, one hundred twenty-one billion, two hundred one million, two hundred twelve thousand, one".