211002021001020 has 48 divisors (see below), whose sum is σ = 590815434833568. Its totient is φ = 56266274549760.

The previous prime is 211002021001019. The next prime is 211002021001063. The reversal of 211002021001020 is 20100120200112.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 211002021000987 and 211002021001005.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25435261 + ... + 32694900.

It is an arithmetic number, because the mean of its divisors is an integer number (12308654892366).

Almost surely, 2^{211002021001020} is an apocalyptic number.

211002021001020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211002021001020 is an abundant number, since it is smaller than the sum of its proper divisors (379813413832548).

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

211002021001020 is a wasteful number, since it uses less digits than its factorization.

211002021001020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58190670 (or 58190668 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 211002021001020 its reverse (20100120200112), we get a palindrome (231102141201132).

The spelling of 211002021001020 in words is "two hundred eleven trillion, two billion, twenty-one million, one thousand, twenty".