1121102111221 has 8 divisors (see below), whose sum is σ = 1187157142080. Its totient is φ = 1055059063488.

The previous prime is 1121102111201. The next prime is 1121102111231. The reversal of 1121102111221 is 1221112011211.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1121102111221 - 2⁷ = 1121102111093 is a prime.

It is a super-2 number, since 2×1121102111221² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1121102111195 and 1121102111204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1121102111201) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2802801 + ... + 3177718.

It is an arithmetic number, because the mean of its divisors is an integer number (148394642760).

Almost surely, 2^{1121102111221} is an apocalyptic number.

It is an amenable number.

1121102111221 is a deficient number, since it is larger than the sum of its proper divisors (66055030859).

1121102111221 is a wasteful number, since it uses less digits than its factorization.

1121102111221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5991563.

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

Adding to 1121102111221 its reverse (1221112011211), we get a palindrome (2342214122432).

The spelling of 1121102111221 in words is "one trillion, one hundred twenty-one billion, one hundred two million, one hundred eleven thousand, two hundred twenty-one".