121142101 has 2 divisors, whose sum is σ = 121142102. Its totient is φ = 121142100.

The previous prime is 121142057. The next prime is 121142129. The reversal of 121142101 is 101241121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 112148100 + 8994001 = 10590^2 + 2999^2 .

It is a cyclic number.

It is not a de Polignac number, because 121142101 - 2⁷ = 121141973 is a prime.

It is a super-3 number, since 3×121142101³ (a number of 25 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121143101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60571050 + 60571051.

It is an arithmetic number, because the mean of its divisors is an integer number (60571051).

Almost surely, 2^121142101 is an apocalyptic number.

It is an amenable number.

121142101 is a deficient number, since it is larger than the sum of its proper divisors (1).

121142101 is an equidigital number, since it uses as much as digits as its factorization.

121142101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 13.

The square root of 121142101 is about 11006.4572410926. The cubic root of 121142101 is about 494.8022895078.

Adding to 121142101 its reverse (101241121), we get a palindrome (222383222).

The spelling of 121142101 in words is "one hundred twenty-one million, one hundred forty-two thousand, one hundred one".