1211213300 has 36 divisors (see below), whose sum is σ = 2867274816. Its totient is φ = 440440800.

The previous prime is 1211213287. The next prime is 1211213329. The reversal of 1211213300 is 33121121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 549452 + ... + 551651.

Almost surely, 2^1211213300 is an apocalyptic number.

1211213300 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1211213300 is an abundant number, since it is smaller than the sum of its proper divisors (1656061516).

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

1211213300 is a wasteful number, since it uses less digits than its factorization.

1211213300 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1101128 (or 1101121 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1211213300 is about 34802.4898534573. The cubic root of 1211213300 is about 1065.9582872608.

Adding to 1211213300 its reverse (33121121), we get a palindrome (1244334421).

It can be divided in two parts, 121121 and 3300, that added together give a palindrome (124421).

The spelling of 1211213300 in words is "one billion, two hundred eleven million, two hundred thirteen thousand, three hundred".