1421122200 has 48 divisors (see below), whose sum is σ = 4405480680. Its totient is φ = 378965760.

The previous prime is 1421122189. The next prime is 1421122207. The reversal of 1421122200 is 22211241.

It is a super-3 number, since 3×1421122200³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 1421122200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1421122207) 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, 1183669 + ... + 1184868.

Almost surely, 2^1421122200 is an apocalyptic number.

1421122200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1421122200 is an abundant number, since it is smaller than the sum of its proper divisors (2984358480).

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

1421122200 is a wasteful number, since it uses less digits than its factorization.

1421122200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2368556 (or 2368547 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 1421122200 is about 37697.7744701196. The cubic root of 1421122200 is about 1124.2868764504.

Adding to 1421122200 its reverse (22211241), we get a palindrome (1443333441).

The spelling of 1421122200 in words is "one billion, four hundred twenty-one million, one hundred twenty-two thousand, two hundred".