121012200101121 has 32 divisors (see below), whose sum is σ = 189385830098688. Its totient is φ = 67280020623360.

The previous prime is 121012200101113. The next prime is 121012200101141. The reversal of 121012200101121 is 121101002210121.

It is a happy number.

It is not a de Polignac number, because 121012200101121 - 2³ = 121012200101113 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121012200101121.

It is not an unprimeable number, because it can be changed into a prime (121012200101141) 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, 59797981 + ... + 61788533.

It is an arithmetic number, because the mean of its divisors is an integer number (5918307190584).

Almost surely, 2^{121012200101121} is an apocalyptic number.

It is an amenable number.

121012200101121 is a deficient number, since it is larger than the sum of its proper divisors (68373629997567).

121012200101121 is a wasteful number, since it uses less digits than its factorization.

121012200101121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2068841.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 121012200101121 its reverse (121101002210121), we get a palindrome (242113202311242).

The spelling of 121012200101121 in words is "one hundred twenty-one trillion, twelve billion, two hundred million, one hundred one thousand, one hundred twenty-one".