1021222101111 has 8 divisors (see below), whose sum is σ = 1361641872000. Its totient is φ = 680808532152.

The previous prime is 1021222101073. The next prime is 1021222101157. The reversal of 1021222101111 is 1111012221201.

It is a happy number.

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

It is not a de Polignac number, because 1021222101111 - 2⁶ = 1021222101047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021222101511) 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, 1151611 + ... + 1835388.

It is an arithmetic number, because the mean of its divisors is an integer number (170205234000).

Almost surely, 2^{1021222101111} is an apocalyptic number.

1021222101111 is a deficient number, since it is larger than the sum of its proper divisors (340419770889).

1021222101111 is a wasteful number, since it uses less digits than its factorization.

1021222101111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3100965.

The product of its (nonzero) digits is 16, while the sum is 15.

Adding to 1021222101111 its reverse (1111012221201), we get a palindrome (2132234322312).

The spelling of 1021222101111 in words is "one trillion, twenty-one billion, two hundred twenty-two million, one hundred one thousand, one hundred eleven".