101221020002 has 16 divisors (see below), whose sum is σ = 153010912032. Its totient is φ = 50217485760.

The previous prime is 101221019929. The next prime is 101221020011. The reversal of 101221020002 is 200020122101.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2372753 + ... + 2415035.

It is an arithmetic number, because the mean of its divisors is an integer number (9563182002).

Almost surely, 2^101221020002 is an apocalyptic number.

101221020002 is a deficient number, since it is larger than the sum of its proper divisors (51789892030).

101221020002 is a wasteful number, since it uses less digits than its factorization.

101221020002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51553.

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

Adding to 101221020002 its reverse (200020122101), we get a palindrome (301241142103).

The spelling of 101221020002 in words is "one hundred one billion, two hundred twenty-one million, twenty thousand, two".