1122112121001 has 16 divisors (see below), whose sum is σ = 1584187233984. Its totient is φ = 704057485824.

The previous prime is 1122112120981. The next prime is 1122112121033. The reversal of 1122112121001 is 1001212112211.

It is a happy number.

It is not a de Polignac number, because 1122112121001 - 2⁹ = 1122112120489 is a prime.

It is a super-2 number, since 2×1122112121001² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1122112120001) 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, 3164670 + ... + 3501336.

It is an arithmetic number, because the mean of its divisors is an integer number (99011702124).

Almost surely, 2^{1122112121001} is an apocalyptic number.

It is an amenable number.

1122112121001 is a deficient number, since it is larger than the sum of its proper divisors (462075112983).

1122112121001 is a wasteful number, since it uses less digits than its factorization.

1122112121001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402040.

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

Adding to 1122112121001 its reverse (1001212112211), we get a palindrome (2123324233212).

The spelling of 1122112121001 in words is "one trillion, one hundred twenty-two billion, one hundred twelve million, one hundred twenty-one thousand, one".