1211200223122 has 16 divisors (see below), whose sum is σ = 1821604479552. Its totient is φ = 604000832400.

The previous prime is 1211200223113. The next prime is 1211200223131. The reversal of 1211200223122 is 2213220021121.

It is an interprime number because it is at equal distance from previous prime (1211200223113) and next prime (1211200223131).

It is a super-3 number, since 3×1211200223122³ (a number of 37 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1211200223122.

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, 628993 + ... + 1678699.

It is an arithmetic number, because the mean of its divisors is an integer number (113850279972).

Almost surely, 2^{1211200223122} is an apocalyptic number.

1211200223122 is a deficient number, since it is larger than the sum of its proper divisors (610404256430).

1211200223122 is a wasteful number, since it uses less digits than its factorization.

1211200223122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1051233.

The product of its (nonzero) digits is 192, while the sum is 19.

Adding to 1211200223122 its reverse (2213220021121), we get a palindrome (3424420244243).

The spelling of 1211200223122 in words is "one trillion, two hundred eleven billion, two hundred million, two hundred twenty-three thousand, one hundred twenty-two".