1111022210121 has 4 divisors (see below), whose sum is σ = 1481362946832. Its totient is φ = 740681473412.

The previous prime is 1111022210107. The next prime is 1111022210143. The reversal of 1111022210121 is 1210122201111.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1111022210121 - 2¹¹ = 1111022208073 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1111022210121.

It is not an unprimeable number, because it can be changed into a prime (1111022210321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 185170368351 + ... + 185170368356.

It is an arithmetic number, because the mean of its divisors is an integer number (370340736708).

Almost surely, 2^{1111022210121} is an apocalyptic number.

It is an amenable number.

1111022210121 is a deficient number, since it is larger than the sum of its proper divisors (370340736711).

1111022210121 is an equidigital number, since it uses as much as digits as its factorization.

1111022210121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370340736710.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1111022210121 its reverse (1210122201111), we get a palindrome (2321144411232).

The spelling of 1111022210121 in words is "one trillion, one hundred eleven billion, twenty-two million, two hundred ten thousand, one hundred twenty-one".