121012201121 has 16 divisors (see below), whose sum is σ = 142789678080. Its totient is φ = 100358576640.

The previous prime is 121012201111. The next prime is 121012201213. The reversal of 121012201121 is 121102210121.

It is a de Polignac number, because none of the positive numbers 2^k-121012201121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 121012201096 and 121012201105.

It is not an unprimeable number, because it can be changed into a prime (121012201111) 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, 1076825 + ... + 1183881.

It is an arithmetic number, because the mean of its divisors is an integer number (8924354880).

Almost surely, 2^121012201121 is an apocalyptic number.

It is an amenable number.

121012201121 is a deficient number, since it is larger than the sum of its proper divisors (21777476959).

121012201121 is a wasteful number, since it uses less digits than its factorization.

121012201121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112304.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 121012201121 its reverse (121102210121), we get a palindrome (242114411242).

The spelling of 121012201121 in words is "one hundred twenty-one billion, twelve million, two hundred one thousand, one hundred twenty-one".