1210211000 has 32 divisors (see below), whose sum is σ = 2831896080. Its totient is φ = 484084000.

The previous prime is 1210210999. The next prime is 1210211029. The reversal of 1210211000 is 1120121.

It is a super-2 number, since 2×1210211000² = 2929221329042000000, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 604106 + ... + 606105.

Almost surely, 2^1210211000 is an apocalyptic number.

1210211000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1210211000 is an abundant number, since it is smaller than the sum of its proper divisors (1621685080).

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

1210211000 is a wasteful number, since it uses less digits than its factorization.

1210211000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1210232 (or 1210218 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 8.

The square root of 1210211000 is about 34788.0870413997. The cubic root of 1210211000 is about 1065.6641731313.

Adding to 1210211000 its reverse (1120121), we get a palindrome (1211331121).

The spelling of 1210211000 in words is "one billion, two hundred ten million, two hundred eleven thousand".