111211010001022 has 4 divisors (see below), whose sum is σ = 166816515001536. Its totient is φ = 55605505000510.

The previous prime is 111211010000897. The next prime is 111211010001023. The reversal of 111211010001022 is 220100010112111.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 111211010000993 and 111211010001011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111211010001023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27802752500254 + ... + 27802752500257.

It is an arithmetic number, because the mean of its divisors is an integer number (41704128750384).

Almost surely, 2^{111211010001022} is an apocalyptic number.

111211010001022 is a deficient number, since it is larger than the sum of its proper divisors (55605505000514).

111211010001022 is an equidigital number, since it uses as much as digits as its factorization.

111211010001022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55605505000513.

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

Adding to 111211010001022 its reverse (220100010112111), we get a palindrome (331311020113133).

The spelling of 111211010001022 in words is "one hundred eleven trillion, two hundred eleven billion, ten million, one thousand, twenty-two".