201001022 has 4 divisors (see below), whose sum is σ = 301501536. Its totient is φ = 100500510.

The previous prime is 201001007. The next prime is 201001037. The reversal of 201001022 is 220100102.

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

It is an interprime number because it is at equal distance from previous prime (201001007) and next prime (201001037).

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, 50250254 + ... + 50250257.

It is an arithmetic number, because the mean of its divisors is an integer number (75375384).

Almost surely, 2^201001022 is an apocalyptic number.

201001022 is a deficient number, since it is larger than the sum of its proper divisors (100500514).

201001022 is a wasteful number, since it uses less digits than its factorization.

201001022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100500513.

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 201001022 is about 14177.4829218730. The cubic root of 201001022 is about 585.7775930721. Note that the first 3 decimals are identical.

Adding to 201001022 its reverse (220100102), we get a palindrome (421101124).

It can be divided in two parts, 20100102 and 2, that multiplied together give a palindrome (40200204).

The spelling of 201001022 in words is "two hundred one million, one thousand, twenty-two".