111101001221002 has 32 divisors (see below), whose sum is σ = 179946769669632. Its totient is φ = 51141441852864.

The previous prime is 111101001220997. The next prime is 111101001221003. The reversal of 111101001221002 is 200122100101111.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (13).

It is not an unprimeable number, because it can be changed into a prime (111101001221003) 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, 77562013 + ... + 78981439.

It is an arithmetic number, because the mean of its divisors is an integer number (5623336552176).

Almost surely, 2^{111101001221002} is an apocalyptic number.

111101001221002 is a deficient number, since it is larger than the sum of its proper divisors (68845768448630).

111101001221002 is a wasteful number, since it uses less digits than its factorization.

111101001221002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1427422.

The product of its (nonzero) digits is 8, while the sum is 13.

Adding to 111101001221002 its reverse (200122100101111), we get a palindrome (311223101322113).

The spelling of 111101001221002 in words is "one hundred eleven trillion, one hundred one billion, one million, two hundred twenty-one thousand, two".