121002061 has 2 divisors, whose sum is σ = 121002062. Its totient is φ = 121002060.

The previous prime is 121002047. The next prime is 121002109. The reversal of 121002061 is 160200121.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 95942025 + 25060036 = 9795^2 + 5006^2 .

It is a cyclic number.

It is not a de Polignac number, because 121002061 - 2²³ = 112613453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (121002001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60501030 + 60501031.

It is an arithmetic number, because the mean of its divisors is an integer number (60501031).

Almost surely, 2^121002061 is an apocalyptic number.

It is an amenable number.

121002061 is a deficient number, since it is larger than the sum of its proper divisors (1).

121002061 is an equidigital number, since it uses as much as digits as its factorization.

121002061 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 121002061 is about 11000.0936814193. The cubic root of 121002061 is about 494.6115525420.

Adding to 121002061 its reverse (160200121), we get a palindrome (281202182).

It can be divided in two parts, 12100 and 2061, that added together give a square (14161 = 119²).

The spelling of 121002061 in words is "one hundred twenty-one million, two thousand, sixty-one".