21020021202202 has 32 divisors (see below), whose sum is σ = 34532353382400. Its totient is φ = 9516817999920.

The previous prime is 21020021202181. The next prime is 21020021202223. The reversal of 21020021202202 is 20220212002012.

It is an interprime number because it is at equal distance from previous prime (21020021202181) and next prime (21020021202223).

It is a super-2 number, since 2×21020021202202² (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 (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14232513 + ... + 15639835.

It is an arithmetic number, because the mean of its divisors is an integer number (1079136043200).

Almost surely, 2^{21020021202202} is an apocalyptic number.

21020021202202 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21020021202202 is a deficient number, since it is larger than the sum of its proper divisors (13512332180198).

21020021202202 is a wasteful number, since it uses less digits than its factorization.

21020021202202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1410018.

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

Adding to 21020021202202 its reverse (20220212002012), we get a palindrome (41240233204214).

The spelling of 21020021202202 in words is "twenty-one trillion, twenty billion, twenty-one million, two hundred two thousand, two hundred two".