1221122010 has 16 divisors (see below), whose sum is σ = 2930692896. Its totient is φ = 325632528.

The previous prime is 1221122009. The next prime is 1221122059. The reversal of 1221122010 is 102211221.

1221122010 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×1221122010² = 2982277926612880200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20352004 + ... + 20352063.

It is an arithmetic number, because the mean of its divisors is an integer number (183168306).

Almost surely, 2^1221122010 is an apocalyptic number.

1221122010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1221122010 is an abundant number, since it is smaller than the sum of its proper divisors (1709570886).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1221122010 is a wasteful number, since it uses less digits than its factorization.

1221122010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40704077.

The product of its (nonzero) digits is 16, while the sum is 12.

The square root of 1221122010 is about 34944.5562284027. The cubic root of 1221122010 is about 1068.8571983715.

Adding to 1221122010 its reverse (102211221), we get a palindrome (1323333231).

The spelling of 1221122010 in words is "one billion, two hundred twenty-one million, one hundred twenty-two thousand, ten".