111021012001 has 16 divisors (see below), whose sum is σ = 114221173248. Its totient is φ = 107844825600.

The previous prime is 111021011999. The next prime is 111021012023. The reversal of 111021012001 is 100210120111.

It is not a de Polignac number, because 111021012001 - 2¹ = 111021011999 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111021012061) 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, 31475700 + ... + 31479226.

It is an arithmetic number, because the mean of its divisors is an integer number (7138823328).

Almost surely, 2^111021012001 is an apocalyptic number.

It is an amenable number.

111021012001 is a deficient number, since it is larger than the sum of its proper divisors (3200161247).

111021012001 is a wasteful number, since it uses less digits than its factorization.

111021012001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6672.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 111021012001 its reverse (100210120111), we get a palindrome (211231132112).

It can be divided in two parts, 1110210 and 12001, that added together give a palindrome (1122211).

The spelling of 111021012001 in words is "one hundred eleven billion, twenty-one million, twelve thousand, one".