20010221212202 has 32 divisors (see below), whose sum is σ = 32383178956800. Its totient is φ = 9218651932800.

The previous prime is 20010221212199. The next prime is 20010221212213. The reversal of 20010221212202 is 20221212201002.

It is a happy number.

It is a super-2 number, since 2×20010221212202² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31073663 + ... + 31711085.

It is an arithmetic number, because the mean of its divisors is an integer number (1011974342400).

Almost surely, 2^{20010221212202} is an apocalyptic number.

20010221212202 is a deficient number, since it is larger than the sum of its proper divisors (12372957744598).

20010221212202 is a wasteful number, since it uses less digits than its factorization.

20010221212202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 639638.

The product of its (nonzero) digits is 128, while the sum is 17.

Adding to 20010221212202 its reverse (20221212201002), we get a palindrome (40231433413204).

The spelling of 20010221212202 in words is "twenty trillion, ten billion, two hundred twenty-one million, two hundred twelve thousand, two hundred two".