1212005152 has 24 divisors (see below), whose sum is σ = 2450627676. Its totient is φ = 589623552.

The previous prime is 1212005131. The next prime is 1212005153. The reversal of 1212005152 is 2515002121.

It can be written as a sum of positive squares in 2 ways, for example, as 909384336 + 302620816 = 30156^2 + 17396^2 .

It is not an unprimeable number, because it can be changed into a prime (1212005153) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 510643 + ... + 513010.

Almost surely, 2^1212005152 is an apocalyptic number.

It is an amenable number.

1212005152 is an abundant number, since it is smaller than the sum of its proper divisors (1238622524).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1212005152 is a wasteful number, since it uses less digits than its factorization.

1212005152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1023700 (or 1023692 counting only the distinct ones).

The product of its (nonzero) digits is 200, while the sum is 19.

The square root of 1212005152 is about 34813.8643646465. The cubic root of 1212005152 is about 1066.1905329834.

Adding to 1212005152 its reverse (2515002121), we get a palindrome (3727007273).

The spelling of 1212005152 in words is "one billion, two hundred twelve million, five thousand, one hundred fifty-two".