1201102106021 has 2 divisors, whose sum is σ = 1201102106022. Its totient is φ = 1201102106020.

The previous prime is 1201102105963. The next prime is 1201102106047. The reversal of 1201102106021 is 1206012011021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 953720215396 + 247381890625 = 976586^2 + 497375^2 .

It is a cyclic number.

It is not a de Polignac number, because 1201102106021 - 2²⁶ = 1201034997157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1201102106081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 600551053010 + 600551053011.

It is an arithmetic number, because the mean of its divisors is an integer number (600551053011).

Almost surely, 2^{1201102106021} is an apocalyptic number.

It is an amenable number.

1201102106021 is a deficient number, since it is larger than the sum of its proper divisors (1).

1201102106021 is an equidigital number, since it uses as much as digits as its factorization.

1201102106021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 1201102106021 its reverse (1206012011021), we get a palindrome (2407114117042).

The spelling of 1201102106021 in words is "one trillion, two hundred one billion, one hundred two million, one hundred six thousand, twenty-one".