121211053 has 8 divisors (see below), whose sum is σ = 124335000. Its totient is φ = 118118208.

The previous prime is 121211033. The next prime is 121211059. The reversal of 121211053 is 350112121.

It can be written as a sum of positive squares in 4 ways, for example, as 4959529 + 116251524 = 2227^2 + 10782^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121211053 - 2⁵ = 121211021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121211059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223 + ... + 15571.

It is an arithmetic number, because the mean of its divisors is an integer number (15541875).

Almost surely, 2^121211053 is an apocalyptic number.

It is an amenable number.

121211053 is a deficient number, since it is larger than the sum of its proper divisors (3123947).

121211053 is a wasteful number, since it uses less digits than its factorization.

121211053 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15551.

The product of its (nonzero) digits is 60, while the sum is 16.

The square root of 121211053 is about 11009.5891385646. The cubic root of 121211053 is about 494.8961493527.

Adding to 121211053 its reverse (350112121), we get a palindrome (471323174).

The spelling of 121211053 in words is "one hundred twenty-one million, two hundred eleven thousand, fifty-three".