1211022120200 has 24 divisors (see below), whose sum is σ = 2815626429930. Its totient is φ = 484408848000.

The previous prime is 1211022120193. The next prime is 1211022120211. The reversal of 1211022120200 is 20212201121.

It can be written as a sum of positive squares in 3 ways, for example, as 821898175396 + 389123944804 = 906586^2 + 623798^2 .

It is a super-2 number, since 2×1211022120200² (a number of 25 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3027555101 + ... + 3027555500.

Almost surely, 2^{1211022120200} is an apocalyptic number.

1211022120200 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1211022120200 is an abundant number, since it is smaller than the sum of its proper divisors (1604604309730).

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

1211022120200 is a wasteful number, since it uses less digits than its factorization.

1211022120200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6055110617 (or 6055110608 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 14.

Adding to 1211022120200 its reverse (20212201121), we get a palindrome (1231234321321).

The spelling of 1211022120200 in words is "one trillion, two hundred eleven billion, twenty-two million, one hundred twenty thousand, two hundred".