1101111220121 has 8 divisors (see below), whose sum is σ = 1201262390688. Its totient is φ = 1000968408000.

The previous prime is 1101111220103. The next prime is 1101111220127. The reversal of 1101111220121 is 1210221111011.

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

It is not a de Polignac number, because 1101111220121 - 2²⁶ = 1101044111257 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1101111220096 and 1101111220105.

It is not an unprimeable number, because it can be changed into a prime (1101111220127) 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, 1812560 + ... + 2342561.

It is an arithmetic number, because the mean of its divisors is an integer number (150157798836).

Almost surely, 2^{1101111220121} is an apocalyptic number.

1101111220121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1101111220121 is a deficient number, since it is larger than the sum of its proper divisors (100151170567).

1101111220121 is a wasteful number, since it uses less digits than its factorization.

1101111220121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4179223.

The product of its (nonzero) digits is 8, while the sum is 14.

Adding to 1101111220121 its reverse (1210221111011), we get a palindrome (2311332331132).

The spelling of 1101111220121 in words is "one trillion, one hundred one billion, one hundred eleven million, two hundred twenty thousand, one hundred twenty-one".