1211021012233 has 8 divisors (see below), whose sum is σ = 1273672740096. Its totient is φ = 1149843442800.

The previous prime is 1211021012231. The next prime is 1211021012263. The reversal of 1211021012233 is 3322101201121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1211021012233 - 2¹ = 1211021012231 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1211021012233.

It is not an unprimeable number, because it can be changed into a prime (1211021012231) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 368537923 + ... + 368541208.

It is an arithmetic number, because the mean of its divisors is an integer number (159209092512).

Almost surely, 2^{1211021012233} is an apocalyptic number.

It is an amenable number.

1211021012233 is a deficient number, since it is larger than the sum of its proper divisors (62651727863).

1211021012233 is an equidigital number, since it uses as much as digits as its factorization.

1211021012233 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 737079215.

The product of its (nonzero) digits is 144, while the sum is 19.

Adding to 1211021012233 its reverse (3322101201121), we get a palindrome (4533122213354).

The spelling of 1211021012233 in words is "one trillion, two hundred eleven billion, twenty-one million, twelve thousand, two hundred thirty-three".