121021022101 has 16 divisors (see below), whose sum is σ = 154153272960. Its totient is φ = 92491960320.

The previous prime is 121021022071. The next prime is 121021022107. The reversal of 121021022101 is 101220120121.

It is a cyclic number.

It is not a de Polignac number, because 121021022101 - 2⁷ = 121021021973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121021022107) 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, 26760460 + ... + 26764981.

It is an arithmetic number, because the mean of its divisors is an integer number (9634579560).

Almost surely, 2^121021022101 is an apocalyptic number.

It is an amenable number.

121021022101 is a deficient number, since it is larger than the sum of its proper divisors (33132250859).

121021022101 is a wasteful number, since it uses less digits than its factorization.

121021022101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53525484.

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 121021022101 its reverse (101220120121), we get a palindrome (222241142222).

The spelling of 121021022101 in words is "one hundred twenty-one billion, twenty-one million, twenty-two thousand, one hundred one".