1011022011221 has 8 divisors (see below), whose sum is σ = 1083391412544. Its totient is φ = 940085667520.

The previous prime is 1011022011199. The next prime is 1011022011253. The reversal of 1011022011221 is 1221102201101.

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 1011022011221 - 2⁶ = 1011022011157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1011022011196 and 1011022011205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011022511221) 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, 358262945 + ... + 358265766.

It is an arithmetic number, because the mean of its divisors is an integer number (135423926568).

Almost surely, 2^{1011022011221} is an apocalyptic number.

It is an amenable number.

1011022011221 is a deficient number, since it is larger than the sum of its proper divisors (72369401323).

1011022011221 is an equidigital number, since it uses as much as digits as its factorization.

1011022011221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 716528811.

The product of its (nonzero) digits is 16, while the sum is 14.

Adding to 1011022011221 its reverse (1221102201101), we get a palindrome (2232124212322).

The spelling of 1011022011221 in words is "one trillion, eleven billion, twenty-two million, eleven thousand, two hundred twenty-one".