111021212001 has 8 divisors (see below), whose sum is σ = 169175180224. Its totient is φ = 63440692560.

The previous prime is 111021211981. The next prime is 111021212011. The reversal of 111021212001 is 100212120111.

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

It is not a de Polignac number, because 111021212001 - 2²³ = 111012823393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111021212011) 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, 2643362170 + ... + 2643362211.

It is an arithmetic number, because the mean of its divisors is an integer number (21146897528).

Almost surely, 2^111021212001 is an apocalyptic number.

It is an amenable number.

111021212001 is a deficient number, since it is larger than the sum of its proper divisors (58153968223).

111021212001 is an equidigital number, since it uses as much as digits as its factorization.

111021212001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5286724391.

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

Adding to 111021212001 its reverse (100212120111), we get a palindrome (211233332112).

The spelling of 111021212001 in words is "one hundred eleven billion, twenty-one million, two hundred twelve thousand, one".