121122101021 has 16 divisors (see below), whose sum is σ = 124950988800. Its totient is φ = 117340182960.

The previous prime is 121122101003. The next prime is 121122101027. The reversal of 121122101021 is 120101221121.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121122101021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 121122100987 and 121122101005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121122101027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13509086 + ... + 13518048.

It is an arithmetic number, because the mean of its divisors is an integer number (7809436800).

Almost surely, 2^121122101021 is an apocalyptic number.

It is an amenable number.

121122101021 is a deficient number, since it is larger than the sum of its proper divisors (3828887779).

121122101021 is a wasteful number, since it uses less digits than its factorization.

121122101021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11536.

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

Adding to 121122101021 its reverse (120101221121), we get a palindrome (241223322142).

The spelling of 121122101021 in words is "one hundred twenty-one billion, one hundred twenty-two million, one hundred one thousand, twenty-one".