111020202101021 has 8 divisors (see below), whose sum is σ = 111335992810560. Its totient is φ = 110704447737952.

The previous prime is 111020202100931. The next prime is 111020202101131. The reversal of 111020202101021 is 120101202020111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-111020202101021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111020202100987 and 111020202101005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111020202001021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2963075 + ... + 15192768.

It is an arithmetic number, because the mean of its divisors is an integer number (13916999101320).

Almost surely, 2^{111020202101021} is an apocalyptic number.

It is an amenable number.

111020202101021 is a deficient number, since it is larger than the sum of its proper divisors (315790709539).

111020202101021 is a wasteful number, since it uses less digits than its factorization.

111020202101021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18173235.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 111020202101021 its reverse (120101202020111), we get a palindrome (231121404121132).

The spelling of 111020202101021 in words is "one hundred eleven trillion, twenty billion, two hundred two million, one hundred one thousand, twenty-one".