21000202111222 has 8 divisors (see below), whose sum is σ = 31500726060096. Its totient is φ = 10499960091192.

The previous prime is 21000202111201. The next prime is 21000202111243. The reversal of 21000202111222 is 22211120200012.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (21000202111201) and next prime (21000202111243).

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

It is a junction number, because it is equal to n+sod(n) for n = 21000202111196 and 21000202111205.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70295893 + ... + 70594000.

It is an arithmetic number, because the mean of its divisors is an integer number (3937590757512).

Almost surely, 2^{21000202111222} is an apocalyptic number.

21000202111222 is a deficient number, since it is larger than the sum of its proper divisors (10500523948874).

21000202111222 is a wasteful number, since it uses less digits than its factorization.

21000202111222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140964422.

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 21000202111222 its reverse (22211120200012), we get a palindrome (43211322311234).

The spelling of 21000202111222 in words is "twenty-one trillion, two hundred two million, one hundred eleven thousand, two hundred twenty-two".