121202102121011 has 48 divisors (see below), whose sum is σ = 145987515648000. Its totient is φ = 99805614644736.

The previous prime is 121202102120993. The next prime is 121202102121031. The reversal of 121202102121011 is 110121201202121.

It is not a de Polignac number, because 121202102121011 - 2⁶ = 121202102120947 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121202102121031) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 3451811 + ... + 15947388.

It is an arithmetic number, because the mean of its divisors is an integer number (3041406576000).

Almost surely, 2^{121202102121011} is an apocalyptic number.

121202102121011 is a deficient number, since it is larger than the sum of its proper divisors (24785413526989).

121202102121011 is a wasteful number, since it uses less digits than its factorization.

121202102121011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19399316 (or 19399287 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 17.

Adding to 121202102121011 its reverse (110121201202121), we get a palindrome (231323303323132).

The spelling of 121202102121011 in words is "one hundred twenty-one trillion, two hundred two billion, one hundred two million, one hundred twenty-one thousand, eleven".