121011220001 has 32 divisors (see below), whose sum is σ = 147388369920. Its totient is φ = 97049534400.

The previous prime is 121011219983. The next prime is 121011220013. The reversal of 121011220001 is 100022110121.

It is not a de Polignac number, because 121011220001 - 2³⁴ = 103831350817 is a prime.

It is a super-2 number, since 2×121011220001² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121011220201) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3659795 + ... + 3692711.

It is an arithmetic number, because the mean of its divisors is an integer number (4605886560).

Almost surely, 2^121011220001 is an apocalyptic number.

It is an amenable number.

121011220001 is a deficient number, since it is larger than the sum of its proper divisors (26377149919).

121011220001 is a wasteful number, since it uses less digits than its factorization.

121011220001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33285.

The product of its (nonzero) digits is 8, while the sum is 11.

Adding to 121011220001 its reverse (100022110121), we get a palindrome (221033330122).

The spelling of 121011220001 in words is "one hundred twenty-one billion, eleven million, two hundred twenty thousand, one".