201121121121022 has 4 divisors (see below), whose sum is σ = 301681681681536. Its totient is φ = 100560560560510.

The previous prime is 201121121120989. The next prime is 201121121121059. The reversal of 201121121121022 is 220121121121102.

It is a happy number.

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

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, 50280280280254 + ... + 50280280280257.

It is an arithmetic number, because the mean of its divisors is an integer number (75420420420384).

Almost surely, 2^{201121121121022} is an apocalyptic number.

201121121121022 is a deficient number, since it is larger than the sum of its proper divisors (100560560560514).

201121121121022 is a wasteful number, since it uses less digits than its factorization.

201121121121022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100560560560513.

The product of its (nonzero) digits is 64, while the sum is 19.

Adding to 201121121121022 its reverse (220121121121102), we get a palindrome (421242242242124).

The spelling of 201121121121022 in words is "two hundred one trillion, one hundred twenty-one billion, one hundred twenty-one million, one hundred twenty-one thousand, twenty-two".