1221010222 has 8 divisors (see below), whose sum is σ = 1831664736. Its totient is φ = 610455312.

The previous prime is 1221010213. The next prime is 1221010247. The reversal of 1221010222 is 2220101221.

It is a happy number.

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

It is a congruent 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, 29643 + ... + 57625.

It is an arithmetic number, because the mean of its divisors is an integer number (228958092).

Almost surely, 2^1221010222 is an apocalyptic number.

1221010222 is a deficient number, since it is larger than the sum of its proper divisors (610654514).

1221010222 is a wasteful number, since it uses less digits than its factorization.

1221010222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49802.

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1221010222 is about 34942.9566865771. The cubic root of 1221010222 is about 1068.8245810863.

Adding to 1221010222 its reverse (2220101221), we get a palindrome (3441111443).

Subtracting 1221010222 from its reverse (2220101221), we obtain a palindrome (999090999).

The spelling of 1221010222 in words is "one billion, two hundred twenty-one million, ten thousand, two hundred twenty-two".