101000000012121 has 12 divisors (see below), whose sum is σ = 166730158750272. Its totient is φ = 57714285721176.

The previous prime is 101000000012071. The next prime is 101000000012141. The reversal of 101000000012121 is 121210000000101.

It is a happy number.

It is not a de Polignac number, because 101000000012121 - 2²¹ = 100999997914969 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (101000000012141) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 801587301621 + ... + 801587301746.

It is an arithmetic number, because the mean of its divisors is an integer number (13894179895856).

Almost surely, 2^{101000000012121} is an apocalyptic number.

It is an amenable number.

101000000012121 is a deficient number, since it is larger than the sum of its proper divisors (65730158738151).

101000000012121 is a wasteful number, since it uses less digits than its factorization.

101000000012121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1603174603380 (or 1603174603377 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 101000000012121 its reverse (121210000000101), we get a palindrome (222210000012222).

The spelling of 101000000012121 in words is "one hundred one trillion, twelve thousand, one hundred twenty-one".