21022020221002 has 16 divisors (see below), whose sum is σ = 32953810868352. Its totient is φ = 10038799354320.

The previous prime is 21022020220973. The next prime is 21022020221077. The reversal of 21022020221002 is 20012202022012.

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, 345658278 + ... + 345719089.

It is an arithmetic number, because the mean of its divisors is an integer number (2059613179272).

Almost surely, 2^{21022020221002} is an apocalyptic number.

21022020221002 is a deficient number, since it is larger than the sum of its proper divisors (11931790647350).

21022020221002 is a wasteful number, since it uses less digits than its factorization.

21022020221002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 691378053.

The product of its (nonzero) digits is 128, while the sum is 16.

Adding to 21022020221002 its reverse (20012202022012), we get a palindrome (41034222243014).

The spelling of 21022020221002 in words is "twenty-one trillion, twenty-two billion, twenty million, two hundred twenty-one thousand, two".