121001121202101 has 16 divisors (see below), whose sum is σ = 184386826971264. Its totient is φ = 69141935545344.

The previous prime is 121001121202099. The next prime is 121001121202103. The reversal of 121001121202101 is 101202121100121.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (121001121202099) and next prime (121001121202103).

It is not a de Polignac number, because 121001121202101 - 2¹ = 121001121202099 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121001121202103) 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, 64143316 + ... + 66002781.

It is an arithmetic number, because the mean of its divisors is an integer number (11524176685704).

Almost surely, 2^{121001121202101} is an apocalyptic number.

It is an amenable number.

121001121202101 is a deficient number, since it is larger than the sum of its proper divisors (63385705769163).

121001121202101 is a wasteful number, since it uses less digits than its factorization.

121001121202101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130190380.

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

Adding to 121001121202101 its reverse (101202121100121), we get a palindrome (222203242302222).

The spelling of 121001121202101 in words is "one hundred twenty-one trillion, one billion, one hundred twenty-one million, two hundred two thousand, one hundred one".