111020212020021 has 8 divisors (see below), whose sum is σ = 148027051115424. Its totient is φ = 74013423802320.

The previous prime is 111020212020013. The next prime is 111020212020031. The reversal of 111020212020021 is 120020212020111.

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

It is not a de Polignac number, because 111020212020021 - 2³ = 111020212020013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111020212020031) 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, 7297711 + ... + 16592076.

It is an arithmetic number, because the mean of its divisors is an integer number (18503381389428).

Almost surely, 2^{111020212020021} is an apocalyptic number.

It is an amenable number.

111020212020021 is a deficient number, since it is larger than the sum of its proper divisors (37006839095403).

111020212020021 is a wasteful number, since it uses less digits than its factorization.

111020212020021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25438851.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 111020212020021 its reverse (120020212020111), we get a palindrome (231040424040132).

The spelling of 111020212020021 in words is "one hundred eleven trillion, twenty billion, two hundred twelve million, twenty thousand, twenty-one".