121001745 has 16 divisors (see below), whose sum is σ = 193810752. Its totient is φ = 64464960.

The previous prime is 121001723. The next prime is 121001759. The reversal of 121001745 is 547100121.

It is a happy number.

It is not a de Polignac number, because 121001745 - 2⁶ = 121001681 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12114 + ... + 19716.

It is an arithmetic number, because the mean of its divisors is an integer number (12113172).

Almost surely, 2^121001745 is an apocalyptic number.

121001745 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

121001745 is a deficient number, since it is larger than the sum of its proper divisors (72809007).

121001745 is a wasteful number, since it uses less digits than its factorization.

121001745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8672.

The product of its (nonzero) digits is 280, while the sum is 21.

The square root of 121001745 is about 11000.0793178958. The cubic root of 121001745 is about 494.6111219781.

Adding to 121001745 its reverse (547100121), we get a palindrome (668101866).

The spelling of 121001745 in words is "one hundred twenty-one million, one thousand, seven hundred forty-five".