121011021110121 has 32 divisors (see below), whose sum is σ = 170665698301440. Its totient is φ = 76056768267264.

The previous prime is 121011021110113. The next prime is 121011021110153. The reversal of 121011021110121 is 121011120110121.

It is not a de Polignac number, because 121011021110121 - 2³ = 121011021110113 is a prime.

It is a super-2 number, since 2×121011021110121² (a number of 29 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 121011021110121.

It is not an unprimeable number, because it can be changed into a prime (121011021110621) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26381961 + ... + 30627273.

It is an arithmetic number, because the mean of its divisors is an integer number (5333303071920).

Almost surely, 2^{121011021110121} is an apocalyptic number.

It is an amenable number.

121011021110121 is a deficient number, since it is larger than the sum of its proper divisors (49654677191319).

121011021110121 is a wasteful number, since it uses less digits than its factorization.

121011021110121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4247765.

The product of its (nonzero) digits is 8, while the sum is 15.

Adding to 121011021110121 its reverse (121011120110121), we get a palindrome (242022141220242).

The spelling of 121011021110121 in words is "one hundred twenty-one trillion, eleven billion, twenty-one million, one hundred ten thousand, one hundred twenty-one".