111020121020001 has 16 divisors (see below), whose sum is σ = 148065700273920. Its totient is φ = 73993979055360.

The previous prime is 111020121019993. The next prime is 111020121020051. The reversal of 111020121020001 is 100020121020111.

It is not a de Polignac number, because 111020121020001 - 2³ = 111020121019993 is a prime.

It is a super-3 number, since 3×111020121020001³ (a number of 43 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (111020121020051) 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, 437509881 + ... + 437763561.

It is an arithmetic number, because the mean of its divisors is an integer number (9254106267120).

Almost surely, 2^{111020121020001} is an apocalyptic number.

It is an amenable number.

111020121020001 is a deficient number, since it is larger than the sum of its proper divisors (37045579253919).

111020121020001 is a wasteful number, since it uses less digits than its factorization.

111020121020001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291416.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 111020121020001 its reverse (100020121020111), we get a palindrome (211040242040112).

The spelling of 111020121020001 in words is "one hundred eleven trillion, twenty billion, one hundred twenty-one million, twenty thousand, one".