121020000101 has 64 divisors (see below), whose sum is σ = 171632541696. Its totient is φ = 82279411200.

The previous prime is 121020000089. The next prime is 121020000103. The reversal of 121020000101 is 101000020121.

It is not a de Polignac number, because 121020000101 - 2¹⁸ = 121019737957 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121020000103) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1288985 + ... + 1379681.

It is an arithmetic number, because the mean of its divisors is an integer number (2681758464).

Almost surely, 2^121020000101 is an apocalyptic number.

121020000101 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

121020000101 is a deficient number, since it is larger than the sum of its proper divisors (50612541595).

121020000101 is a wasteful number, since it uses less digits than its factorization.

121020000101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90802.

The product of its (nonzero) digits is 4, while the sum is 8.

Adding to 121020000101 its reverse (101000020121), we get a palindrome (222020020222).

The spelling of 121020000101 in words is "one hundred twenty-one billion, twenty million, one hundred one", and thus it is an aban number.