1211100170234 has 32 divisors (see below), whose sum is σ = 1862877434880. Its totient is φ = 590202374832.

The previous prime is 1211100170233. The next prime is 1211100170257. The reversal of 1211100170234 is 4320710011121.

It is a super-2 number, since 2×1211100170234² (a number of 25 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1211100170233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126851849 + ... + 126861395.

It is an arithmetic number, because the mean of its divisors is an integer number (58214919840).

Almost surely, 2^{1211100170234} is an apocalyptic number.

1211100170234 is a deficient number, since it is larger than the sum of its proper divisors (651777264646).

1211100170234 is a wasteful number, since it uses less digits than its factorization.

1211100170234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12594.

The product of its (nonzero) digits is 336, while the sum is 23.

Adding to 1211100170234 its reverse (4320710011121), we get a palindrome (5531810181355).

The spelling of 1211100170234 in words is "one trillion, two hundred eleven billion, one hundred million, one hundred seventy thousand, two hundred thirty-four".