1225212370 has 8 divisors (see below), whose sum is σ = 2205382284. Its totient is φ = 490084944.

The previous prime is 1225212341. The next prime is 1225212377. The reversal of 1225212370 is 732125221.

It can be written as a sum of positive squares in 2 ways, for example, as 1220873481 + 4338889 = 34941^2 + 2083^2 .

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

It is a super-2 number, since 2×1225212370² = 3002290703202033800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1225212377) 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, 61260609 + ... + 61260628.

Almost surely, 2^1225212370 is an apocalyptic number.

1225212370 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1225212370 is a deficient number, since it is larger than the sum of its proper divisors (980169914).

1225212370 is a wasteful number, since it uses less digits than its factorization.

1225212370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122521244.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 1225212370 is about 35003.0337256644. The cubic root of 1225212370 is about 1070.0493091668.

Adding to 1225212370 its reverse (732125221), we get a palindrome (1957337591).

The spelling of 1225212370 in words is "one billion, two hundred twenty-five million, two hundred twelve thousand, three hundred seventy".