201211020022 has 4 divisors (see below), whose sum is σ = 301816530036. Its totient is φ = 100605510010.

The previous prime is 201211020013. The next prime is 201211020041. The reversal of 201211020022 is 220020112102.

It is a happy number.

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 = 201211019984 and 201211020011.

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, 50302755004 + ... + 50302755007.

It is an arithmetic number, because the mean of its divisors is an integer number (75454132509).

Almost surely, 2^201211020022 is an apocalyptic number.

201211020022 is a deficient number, since it is larger than the sum of its proper divisors (100605510014).

201211020022 is a wasteful number, since it uses less digits than its factorization.

201211020022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100605510013.

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

Adding to 201211020022 its reverse (220020112102), we get a palindrome (421231132124).

The spelling of 201211020022 in words is "two hundred one billion, two hundred eleven million, twenty thousand, twenty-two".