121001253 has 32 divisors (see below), whose sum is σ = 178329600. Its totient is φ = 72676800.

The previous prime is 121001249. The next prime is 121001273. The reversal of 121001253 is 352100121.

It is not a de Polignac number, because 121001253 - 2² = 121001249 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121001203) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 116848 + ... + 117878.

It is an arithmetic number, because the mean of its divisors is an integer number (5572800).

Almost surely, 2^121001253 is an apocalyptic number.

It is an amenable number.

121001253 is a deficient number, since it is larger than the sum of its proper divisors (57328347).

121001253 is a wasteful number, since it uses less digits than its factorization.

121001253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1153.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 121001253 is about 11000.0569543980. The cubic root of 121001253 is about 494.6104516048.

Adding to 121001253 its reverse (352100121), we get a palindrome (473101374).

The spelling of 121001253 in words is "one hundred twenty-one million, one thousand, two hundred fifty-three".