111020102121 has 4 divisors (see below), whose sum is σ = 148026802832. Its totient is φ = 74013401412.

The previous prime is 111020102117. The next prime is 111020102147. The reversal of 111020102121 is 121201020111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 121201020111 = 3 ⋅40400340037.

It is not a de Polignac number, because 111020102121 - 2² = 111020102117 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 111020102097 and 111020102106.

It is not an unprimeable number, because it can be changed into a prime (111020102321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18503350351 + ... + 18503350356.

It is an arithmetic number, because the mean of its divisors is an integer number (37006700708).

Almost surely, 2^111020102121 is an apocalyptic number.

It is an amenable number.

111020102121 is a deficient number, since it is larger than the sum of its proper divisors (37006700711).

111020102121 is an equidigital number, since it uses as much as digits as its factorization.

111020102121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37006700710.

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

Adding to 111020102121 its reverse (121201020111), we get a palindrome (232221122232).

The spelling of 111020102121 in words is "one hundred eleven billion, twenty million, one hundred two thousand, one hundred twenty-one".