1021222201111 has 32 divisors (see below), whose sum is σ = 1279021639680. Its totient is φ = 795033792000.

The previous prime is 1021222201091. The next prime is 1021222201151. The reversal of 1021222201111 is 1111022221201.

It is not a de Polignac number, because 1021222201111 - 2¹⁹ = 1021221676823 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021222201151) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6866386 + ... + 7013536.

It is an arithmetic number, because the mean of its divisors is an integer number (39969426240).

Almost surely, 2^{1021222201111} is an apocalyptic number.

1021222201111 is a deficient number, since it is larger than the sum of its proper divisors (257799438569).

1021222201111 is a wasteful number, since it uses less digits than its factorization.

1021222201111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149215.

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1021222201111 its reverse (1111022221201), we get a palindrome (2132244422312).

The spelling of 1021222201111 in words is "one trillion, twenty-one billion, two hundred twenty-two million, two hundred one thousand, one hundred eleven".