201211021022222 has 4 divisors (see below), whose sum is σ = 301816531533336. Its totient is φ = 100605510511110.

The previous prime is 201211021022191. The next prime is 201211021022287. The reversal of 201211021022222 is 222220120112102.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 201211021022194 and 201211021022203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50302755255554 + ... + 50302755255557.

It is an arithmetic number, because the mean of its divisors is an integer number (75454132883334).

Almost surely, 2^{201211021022222} is an apocalyptic number.

201211021022222 is a deficient number, since it is larger than the sum of its proper divisors (100605510511114).

201211021022222 is a wasteful number, since it uses less digits than its factorization.

201211021022222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100605510511113.

The product of its (nonzero) digits is 256, while the sum is 20.

Adding to 201211021022222 its reverse (222220120112102), we get a palindrome (423431141134324).

The spelling of 201211021022222 in words is "two hundred one trillion, two hundred eleven billion, twenty-one million, twenty-two thousand, two hundred twenty-two".