201022101002 has 4 divisors (see below), whose sum is σ = 301533151506. Its totient is φ = 100511050500.

The previous prime is 201022100999. The next prime is 201022101011. The reversal of 201022101002 is 200101220102.

It is a happy number.

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

It can be written as a sum of positive squares in only one way, i.e., 135189317761 + 65832783241 = 367681^2 + 256579^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50255525249 + ... + 50255525252.

Almost surely, 2^201022101002 is an apocalyptic number.

201022101002 is a deficient number, since it is larger than the sum of its proper divisors (100511050504).

201022101002 is a wasteful number, since it uses less digits than its factorization.

201022101002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100511050503.

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

Adding to 201022101002 its reverse (200101220102), we get a palindrome (401123321104).

The spelling of 201022101002 in words is "two hundred one billion, twenty-two million, one hundred one thousand, two".