1020223111211 has 8 divisors (see below), whose sum is σ = 1030385290704. Its totient is φ = 1010096904960.

The previous prime is 1020223111093. The next prime is 1020223111231. The reversal of 1020223111211 is 1121113220201.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1020223111211 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 1020223111211.

It is not an unprimeable number, because it can be changed into a prime (1020223111231) 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, 8936306 + ... + 9049751.

It is an arithmetic number, because the mean of its divisors is an integer number (128798161338).

Almost surely, 2^{1020223111211} is an apocalyptic number.

1020223111211 is a deficient number, since it is larger than the sum of its proper divisors (10162179493).

1020223111211 is a wasteful number, since it uses less digits than its factorization.

1020223111211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17986621.

The product of its (nonzero) digits is 48, while the sum is 17.

Adding to 1020223111211 its reverse (1121113220201), we get a palindrome (2141336331412).

The spelling of 1020223111211 in words is "one trillion, twenty billion, two hundred twenty-three million, one hundred eleven thousand, two hundred eleven".