1020221220111 has 8 divisors (see below), whose sum is σ = 1365939338544. Its totient is φ = 677325290880.

The previous prime is 1020221219959. The next prime is 1020221220143. The reversal of 1020221220111 is 1110221220201.

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

It is not a de Polignac number, because 1020221220111 - 2²³ = 1020212831503 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020221220181) 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, 705546456 + ... + 705547901.

It is an arithmetic number, because the mean of its divisors is an integer number (170742417318).

Almost surely, 2^{1020221220111} is an apocalyptic number.

1020221220111 is a deficient number, since it is larger than the sum of its proper divisors (345718118433).

1020221220111 is a wasteful number, since it uses less digits than its factorization.

1020221220111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1411094601.

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

Adding to 1020221220111 its reverse (1110221220201), we get a palindrome (2130442440312).

The spelling of 1020221220111 in words is "one trillion, twenty billion, two hundred twenty-one million, two hundred twenty thousand, one hundred eleven".