211220312003020 has 96 divisors (see below), whose sum is σ = 455319602337600. Its totient is φ = 82261289263104.

The previous prime is 211220312002993. The next prime is 211220312003047. The reversal of 211220312003020 is 20300213022112.

It is an interprime number because it is at equal distance from previous prime (211220312002993) and next prime (211220312003047).

It is a super-2 number, since 2×211220312003020² (a number of 29 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1440042246 + ... + 1440188914.

It is an arithmetic number, because the mean of its divisors is an integer number (4742912524350).

Almost surely, 2^{211220312003020} is an apocalyptic number.

211220312003020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 211220312003020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (227659801168800).

211220312003020 is an abundant number, since it is smaller than the sum of its proper divisors (244099290334580).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

211220312003020 is a wasteful number, since it uses less digits than its factorization.

211220312003020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152027 (or 152025 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 211220312003020 its reverse (20300213022112), we get a palindrome (231520525025132).

The spelling of 211220312003020 in words is "two hundred eleven trillion, two hundred twenty billion, three hundred twelve million, three thousand, twenty".