1221141004 has 12 divisors (see below), whose sum is σ = 2186694664. Its totient is φ = 596371104.

The previous prime is 1221140989. The next prime is 1221141011. The reversal of 1221141004 is 4001411221.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3549657 + ... + 3550000.

Almost surely, 2^1221141004 is an apocalyptic number.

It is an amenable number.

1221141004 is a deficient number, since it is larger than the sum of its proper divisors (965553660).

1221141004 is a wasteful number, since it uses less digits than its factorization.

1221141004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7099704 (or 7099702 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

The square root of 1221141004 is about 34944.8280007214. The cubic root of 1221141004 is about 1068.8627402061.

Adding to 1221141004 its reverse (4001411221), we get a palindrome (5222552225).

The spelling of 1221141004 in words is "one billion, two hundred twenty-one million, one hundred forty-one thousand, four".