201001201022 has 4 divisors (see below), whose sum is σ = 301501801536. Its totient is φ = 100500600510.

The previous prime is 201001200991. The next prime is 201001201043. The reversal of 201001201022 is 220102100102.

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 = 201001200994 and 201001201012.

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, 50250300254 + ... + 50250300257.

It is an arithmetic number, because the mean of its divisors is an integer number (75375450384).

Almost surely, 2^201001201022 is an apocalyptic number.

201001201022 is a deficient number, since it is larger than the sum of its proper divisors (100500600514).

201001201022 is a wasteful number, since it uses less digits than its factorization.

201001201022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100500600513.

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

Adding to 201001201022 its reverse (220102100102), we get a palindrome (421103301124).

The spelling of 201001201022 in words is "two hundred one billion, one million, two hundred one thousand, twenty-two".