121122101005 has 16 divisors (see below), whose sum is σ = 146068231680. Its totient is φ = 96416958528.

The previous prime is 121122101003. The next prime is 121122101027. The reversal of 121122101005 is 500101221121.

It is a cyclic number.

It is not a de Polignac number, because 121122101005 - 2¹ = 121122101003 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121122101005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121122101003) 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, 2404659 + ... + 2454511.

It is an arithmetic number, because the mean of its divisors is an integer number (9129264480).

Almost surely, 2^121122101005 is an apocalyptic number.

It is an amenable number.

121122101005 is a deficient number, since it is larger than the sum of its proper divisors (24946130675).

121122101005 is a wasteful number, since it uses less digits than its factorization.

121122101005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52260.

The product of its (nonzero) digits is 40, while the sum is 16.

Adding to 121122101005 its reverse (500101221121), we get a palindrome (621223322126).

The spelling of 121122101005 in words is "one hundred twenty-one billion, one hundred twenty-two million, one hundred one thousand, five".