1222511002 has 4 divisors (see below), whose sum is σ = 1833766506. Its totient is φ = 611255500.

The previous prime is 1222510951. The next prime is 1222511023. The reversal of 1222511002 is 2001152221.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 688485121 + 534025881 = 26239^2 + 23109^2 .

It is a super-2 number, since 2×1222511002² = 2989066300022088008, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305627749 + ... + 305627752.

Almost surely, 2^1222511002 is an apocalyptic number.

1222511002 is a deficient number, since it is larger than the sum of its proper divisors (611255504).

1222511002 is an equidigital number, since it uses as much as digits as its factorization.

1222511002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 611255503.

The product of its (nonzero) digits is 80, while the sum is 16.

The square root of 1222511002 is about 34964.4248057937. The cubic root of 1222511002 is about 1069.2623098267.

Adding to 1222511002 its reverse (2001152221), we get a palindrome (3223663223).

The spelling of 1222511002 in words is "one billion, two hundred twenty-two million, five hundred eleven thousand, two".