1202213100 has 144 divisors (see below), whose sum is σ = 3833254656. Its totient is φ = 288480000.

The previous prime is 1202213083. The next prime is 1202213113. The reversal of 1202213100 is 13122021.

It is a super-2 number, since 2×1202213100² = 2890632675623220000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 331497 + ... + 335103.

It is an arithmetic number, because the mean of its divisors is an integer number (26619824).

Almost surely, 2^1202213100 is an apocalyptic number.

1202213100 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 1202213100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1916627328).

1202213100 is an abundant number, since it is smaller than the sum of its proper divisors (2631041556).

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

1202213100 is a wasteful number, since it uses less digits than its factorization.

1202213100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3736 (or 3729 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 1202213100 is about 34672.9447840820. The cubic root of 1202213100 is about 1063.3114373516.

Adding to 1202213100 its reverse (13122021), we get a palindrome (1215335121).

It can be divided in two parts, 120221 and 3100, that added together give a palindrome (123321).

The spelling of 1202213100 in words is "one billion, two hundred two million, two hundred thirteen thousand, one hundred".