20021101222 has 32 divisors (see below), whose sum is σ = 30960921600. Its totient is φ = 9704116800.

The previous prime is 20021101207. The next prime is 20021101237. The reversal of 20021101222 is 22210112002.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (20021101207) and next prime (20021101237).

It is a super-4 number, since 4×20021101222⁴ (a number of 42 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12365529 + ... + 12367147.

It is an arithmetic number, because the mean of its divisors is an integer number (967528800).

Almost surely, 2^20021101222 is an apocalyptic number.

20021101222 is a deficient number, since it is larger than the sum of its proper divisors (10939820378).

20021101222 is a wasteful number, since it uses less digits than its factorization.

20021101222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2532.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 20021101222 its reverse (22210112002), we get a palindrome (42231213224).

The spelling of 20021101222 in words is "twenty billion, twenty-one million, one hundred one thousand, two hundred twenty-two".