121544212 has 6 divisors (see below), whose sum is σ = 212702378. Its totient is φ = 60772104.

The previous prime is 121544179. The next prime is 121544221. The reversal of 121544212 is 212445121.

It can be written as a sum of positive squares in only one way, i.e., 72488196 + 49056016 = 8514^2 + 7004^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15193023 + ... + 15193030.

Almost surely, 2^121544212 is an apocalyptic number.

It is an amenable number.

121544212 is a deficient number, since it is larger than the sum of its proper divisors (91158166).

121544212 is a wasteful number, since it uses less digits than its factorization.

121544212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30386057 (or 30386055 counting only the distinct ones).

The product of its digits is 640, while the sum is 22.

The square root of 121544212 is about 11024.7091571615. The cubic root of 121544212 is about 495.3491561012.

Adding to 121544212 its reverse (212445121), we get a palindrome (333989333).

Subtracting 121544212 from its reverse (212445121), we obtain a palindrome (90900909).

The spelling of 121544212 in words is "one hundred twenty-one million, five hundred forty-four thousand, two hundred twelve".