1012122200 has 48 divisors (see below), whose sum is σ = 2491615080. Its totient is φ = 381032960.

The previous prime is 1012122197. The next prime is 1012122203. The reversal of 1012122200 is 22212101.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (1012122197) and next prime (1012122203).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1012122203) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 145442 + ... + 152241.

Almost surely, 2^1012122200 is an apocalyptic number.

1012122200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1012122200 is an abundant number, since it is smaller than the sum of its proper divisors (1479492880).

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

1012122200 is a wasteful number, since it uses less digits than its factorization.

1012122200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297716 (or 297707 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 1012122200 is about 31813.8680452409. The cubic root of 1012122200 is about 1004.0245148853.

Adding to 1012122200 its reverse (22212101), we get a palindrome (1034334301).

The spelling of 1012122200 in words is "one billion, twelve million, one hundred twenty-two thousand, two hundred".