2111121221301 has 32 divisors (see below), whose sum is σ = 3455543704320. Its totient is φ = 1267032678912.

The previous prime is 2111121221299. The next prime is 2111121221309. The reversal of 2111121221301 is 1031221211112.

It is a happy number.

2111121221301 is a `hidden beast` number, since 21 + 1 + 1 + 121 + 221 + 301 = 666.

It is not a de Polignac number, because 2111121221301 - 2¹ = 2111121221299 is a prime.

It is a super-2 number, since 2×2111121221301² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2111121221309) 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, 99976240 + ... + 99997353.

It is an arithmetic number, because the mean of its divisors is an integer number (107985740760).

Almost surely, 2^{2111121221301} is an apocalyptic number.

It is an amenable number.

2111121221301 is a deficient number, since it is larger than the sum of its proper divisors (1344422483019).

2111121221301 is a wasteful number, since it uses less digits than its factorization.

2111121221301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199973642 (or 199973636 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 18.

Adding to 2111121221301 its reverse (1031221211112), we get a palindrome (3142342432413).

The spelling of 2111121221301 in words is "two trillion, one hundred eleven billion, one hundred twenty-one million, two hundred twenty-one thousand, three hundred one".