1011212200221 has 8 divisors (see below), whose sum is σ = 1348440901824. Its totient is φ = 674062482720.

The previous prime is 1011212200213. The next prime is 1011212200303. The reversal of 1011212200221 is 1220022121101.

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

It is not a de Polignac number, because 1011212200221 - 2³ = 1011212200213 is a prime.

It is a super-2 number, since 2×1011212200221² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1011212200221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1011212200211) 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, 19716145 + ... + 19767366.

It is an arithmetic number, because the mean of its divisors is an integer number (168555112728).

Almost surely, 2^{1011212200221} is an apocalyptic number.

It is an amenable number.

1011212200221 is a deficient number, since it is larger than the sum of its proper divisors (337228701603).

1011212200221 is an equidigital number, since it uses as much as digits as its factorization.

1011212200221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39492051.

The product of its (nonzero) digits is 32, while the sum is 15.

Adding to 1011212200221 its reverse (1220022121101), we get a palindrome (2231234321322).

The spelling of 1011212200221 in words is "one trillion, eleven billion, two hundred twelve million, two hundred thousand, two hundred twenty-one".