121122002111 has 4 divisors (see below), whose sum is σ = 132133093224. Its totient is φ = 110110911000.

The previous prime is 121122002077. The next prime is 121122002147. The reversal of 121122002111 is 111200221121.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 121122002111 - 2²⁶ = 121054893247 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121122002311) 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, 5505545540 + ... + 5505545561.

It is an arithmetic number, because the mean of its divisors is an integer number (33033273306).

Almost surely, 2^121122002111 is an apocalyptic number.

121122002111 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

121122002111 is a deficient number, since it is larger than the sum of its proper divisors (11011091113).

121122002111 is a wasteful number, since it uses less digits than its factorization.

121122002111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11011091112.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121122002111 its reverse (111200221121), we get a palindrome (232322223232).

The spelling of 121122002111 in words is "one hundred twenty-one billion, one hundred twenty-two million, two thousand, one hundred eleven".