111121102201021 has 16 divisors (see below), whose sum is σ = 121951633668480. Its totient is φ = 100412033302080.

The previous prime is 111121102200973. The next prime is 111121102201033. The reversal of 111121102201021 is 120102201121111.

It is a cyclic number.

It is not a de Polignac number, because 111121102201021 - 2⁹ = 111121102200509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 111121102200986 and 111121102201004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111121102201051) 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, 84416515 + ... + 85722751.

It is an arithmetic number, because the mean of its divisors is an integer number (7621977104280).

Almost surely, 2^{111121102201021} is an apocalyptic number.

111121102201021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

111121102201021 is a deficient number, since it is larger than the sum of its proper divisors (10830531467459).

111121102201021 is a wasteful number, since it uses less digits than its factorization.

111121102201021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1352724.

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

Adding to 111121102201021 its reverse (120102201121111), we get a palindrome (231223303322132).

The spelling of 111121102201021 in words is "one hundred eleven trillion, one hundred twenty-one billion, one hundred two million, two hundred one thousand, twenty-one".