1211011023330 has 24 divisors (see below), whose sum is σ = 3148628660892. Its totient is φ = 322936272864.

The previous prime is 1211011023281. The next prime is 1211011023349. The reversal of 1211011023330 is 333201101121.

It can be written as a sum of positive squares in 2 ways, for example, as 1203411194001 + 7599829329 = 1097001^2 + 87177^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6727838929 + ... + 6727839108.

Almost surely, 2^{1211011023330} is an apocalyptic number.

1211011023330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1211011023330 is an abundant number, since it is smaller than the sum of its proper divisors (1937617637562).

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

1211011023330 is a wasteful number, since it uses less digits than its factorization.

1211011023330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13455678050 (or 13455678047 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

Adding to 1211011023330 its reverse (333201101121), we get a palindrome (1544212124451).

The spelling of 1211011023330 in words is "one trillion, two hundred eleven billion, eleven million, twenty-three thousand, three hundred thirty".