1212252530 has 16 divisors (see below), whose sum is σ = 2191843584. Its totient is φ = 482725680.

The previous prime is 1212252407. The next prime is 1212252533. The reversal of 1212252530 is 352522121.

It is a junction number, because it is equal to n+sod(n) for n = 1212252496 and 1212252505.

It is not an unprimeable number, because it can be changed into a prime (1212252533) 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, 269576 + ... + 274035.

It is an arithmetic number, because the mean of its divisors is an integer number (136990224).

Almost surely, 2^1212252530 is an apocalyptic number.

1212252530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1212252530 is a deficient number, since it is larger than the sum of its proper divisors (979591054).

1212252530 is a wasteful number, since it uses less digits than its factorization.

1212252530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543841.

The product of its (nonzero) digits is 1200, while the sum is 23.

The square root of 1212252530 is about 34817.4170495170. The cubic root of 1212252530 is about 1066.2630668168.

Adding to 1212252530 its reverse (352522121), we get a palindrome (1564774651).

The spelling of 1212252530 in words is "one billion, two hundred twelve million, two hundred fifty-two thousand, five hundred thirty".