1201200220 has 48 divisors (see below), whose sum is σ = 2754920448. Its totient is φ = 436311360.

The previous prime is 1201200199. The next prime is 1201200233. The reversal of 1201200220 is 220021021.

It is a Harshad number since it is a multiple of its sum of digits (10).

It is a junction number, because it is equal to n+sod(n) for n = 1201200197 and 1201200206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 236629 + ... + 241651.

It is an arithmetic number, because the mean of its divisors is an integer number (57394176).

Almost surely, 2^1201200220 is an apocalyptic number.

1201200220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201200220 is an abundant number, since it is smaller than the sum of its proper divisors (1553720228).

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

1201200220 is a wasteful number, since it uses less digits than its factorization.

1201200220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6130 (or 6128 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 1201200220 is about 34658.3355053297. The cubic root of 1201200220 is about 1063.0127355950.

Adding to 1201200220 its reverse (220021021), we get a palindrome (1421221241).

The spelling of 1201200220 in words is "one billion, two hundred one million, two hundred thousand, two hundred twenty".