111211401022 has 4 divisors (see below), whose sum is σ = 166817101536. Its totient is φ = 55605700510.

The previous prime is 111211400953. The next prime is 111211401029. The reversal of 111211401022 is 220104112111.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×111211401022² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 111211400987 and 111211401005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111211401029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27802850254 + ... + 27802850257.

It is an arithmetic number, because the mean of its divisors is an integer number (41704275384).

Almost surely, 2^111211401022 is an apocalyptic number.

111211401022 is a deficient number, since it is larger than the sum of its proper divisors (55605700514).

111211401022 is an equidigital number, since it uses as much as digits as its factorization.

111211401022 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55605700513.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 111211401022 its reverse (220104112111), we get a palindrome (331315513133).

The spelling of 111211401022 in words is "one hundred eleven billion, two hundred eleven million, four hundred one thousand, twenty-two".