121001021101 has 2 divisors, whose sum is σ = 121001021102. Its totient is φ = 121001021100.

The previous prime is 121001021069. The next prime is 121001021129. The reversal of 121001021101 is 101120100121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 98785118601 + 22215902500 = 314301^2 + 149050^2 .

It is a cyclic number.

It is not a de Polignac number, because 121001021101 - 2⁵ = 121001021069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121001027101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60500510550 + 60500510551.

It is an arithmetic number, because the mean of its divisors is an integer number (60500510551).

Almost surely, 2^121001021101 is an apocalyptic number.

It is an amenable number.

121001021101 is a deficient number, since it is larger than the sum of its proper divisors (1).

121001021101 is an equidigital number, since it uses as much as digits as its factorization.

121001021101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 121001021101 its reverse (101120100121), we get a palindrome (222121121222).

The spelling of 121001021101 in words is "one hundred twenty-one billion, one million, twenty-one thousand, one hundred one".