1122020111121 has 128 divisors (see below), whose sum is σ = 1974540288000. Its totient is φ = 550199091456.

The previous prime is 1122020111077. The next prime is 1122020111167. The reversal of 1122020111121 is 1211110202211.

It is a happy number.

It is not a de Polignac number, because 1122020111121 - 2⁶ = 1122020111057 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1122020111121.

It is not an unprimeable number, because it can be changed into a prime (1122020115121) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 189431466 + ... + 189437388.

It is an arithmetic number, because the mean of its divisors is an integer number (15426096000).

Almost surely, 2^{1122020111121} is an apocalyptic number.

It is an amenable number.

1122020111121 is a deficient number, since it is larger than the sum of its proper divisors (852520176879).

1122020111121 is a wasteful number, since it uses less digits than its factorization.

1122020111121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6643.

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

Adding to 1122020111121 its reverse (1211110202211), we get a palindrome (2333130313332).

The spelling of 1122020111121 in words is "one trillion, one hundred twenty-two billion, twenty million, one hundred eleven thousand, one hundred twenty-one".