201121000022 has 4 divisors (see below), whose sum is σ = 301681500036. Its totient is φ = 100560500010.

The previous prime is 201121000021. The next prime is 201121000043. The reversal of 201121000022 is 220000121102.

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 = 201120999967 and 201121000012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (201121000021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50280250004 + ... + 50280250007.

It is an arithmetic number, because the mean of its divisors is an integer number (75420375009).

Almost surely, 2^201121000022 is an apocalyptic number.

201121000022 is a deficient number, since it is larger than the sum of its proper divisors (100560500014).

201121000022 is a wasteful number, since it uses less digits than its factorization.

201121000022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100560500013.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 201121000022 its reverse (220000121102), we get a palindrome (421121121124).

The spelling of 201121000022 in words is "two hundred one billion, one hundred twenty-one million, twenty-two", and thus it is an aban number.