1202120200 has 96 divisors (see below), whose sum is σ = 2858645160. Its totient is φ = 470016000.

The previous prime is 1202120197. The next prime is 1202120239. The reversal of 1202120200 is 20212021.

It can be written as a sum of positive squares in 12 ways, for example, as 292615236 + 909504964 = 17106^2 + 30158^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1999900 + ... + 2000500.

Almost surely, 2^1202120200 is an apocalyptic number.

1202120200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1202120200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1429322580).

1202120200 is an abundant number, since it is smaller than the sum of its proper divisors (1656524960).

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

1202120200 is a wasteful number, since it uses less digits than its factorization.

1202120200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 827 (or 818 counting only the distinct ones).

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

The square root of 1202120200 is about 34671.6050969666. The cubic root of 1202120200 is about 1063.2840478156.

Adding to 1202120200 its reverse (20212021), we get a palindrome (1222332221).

It can be divided in two parts, 1202 and 120200, that multiplied together give a square (144480400 = 12020²).

The spelling of 1202120200 in words is "one billion, two hundred two million, one hundred twenty thousand, two hundred".