1211200423010 has 32 divisors (see below), whose sum is σ = 2223122276592. Its totient is φ = 474948198400.

The previous prime is 1211200422973. The next prime is 1211200423021. The reversal of 1211200423010 is 103240021121.

It can be written as a sum of positive squares in 8 ways, for example, as 602723980609 + 608476442401 = 776353^2 + 780049^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1211200423010.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 293891 + ... + 1583910.

Almost surely, 2^{1211200423010} is an apocalyptic number.

1211200423010 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211200423010 is a deficient number, since it is larger than the sum of its proper divisors (1011921853582).

1211200423010 is a wasteful number, since it uses less digits than its factorization.

1211200423010 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1879078.

The product of its (nonzero) digits is 96, while the sum is 17.

Adding to 1211200423010 its reverse (103240021121), we get a palindrome (1314440444131).

The spelling of 1211200423010 in words is "one trillion, two hundred eleven billion, two hundred million, four hundred twenty-three thousand, ten".