121121002101 has 16 divisors (see below), whose sum is σ = 176200542720. Its totient is φ = 73396443120.

The previous prime is 121121002099. The next prime is 121121002109. The reversal of 121121002101 is 101200121121.

It is not a de Polignac number, because 121121002101 - 2¹ = 121121002099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121121002109) 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, 11641 + ... + 492318.

It is an arithmetic number, because the mean of its divisors is an integer number (11012533920).

Almost surely, 2^121121002101 is an apocalyptic number.

121121002101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121121002101 is a deficient number, since it is larger than the sum of its proper divisors (55079540619).

121121002101 is a wasteful number, since it uses less digits than its factorization.

121121002101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511256.

The product of its (nonzero) digits is 8, while the sum is 12.

Adding to 121121002101 its reverse (101200121121), we get a palindrome (222321123222).

The spelling of 121121002101 in words is "one hundred twenty-one billion, one hundred twenty-one million, two thousand, one hundred one".