211000020001020 has 144 divisors (see below), whose sum is σ = 683208367994880. Its totient is φ = 52554489724800.

The previous prime is 211000020000943. The next prime is 211000020001051. The reversal of 211000020001020 is 20100020000112.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 211000020000993 and 211000020001011.

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 47 ways as a sum of consecutive naturals, for example, 434235436 + ... + 434721075.

It is an arithmetic number, because the mean of its divisors is an integer number (4744502555520).

Almost surely, 2^{211000020001020} is an apocalyptic number.

211000020001020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211000020001020 is an abundant number, since it is smaller than the sum of its proper divisors (472208347993860).

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

211000020001020 is a wasteful number, since it uses less digits than its factorization.

211000020001020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 868956616 (or 868956611 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 9.

Adding to 211000020001020 its reverse (20100020000112), we get a palindrome (231100040001132).

The spelling of 211000020001020 in words is "two hundred eleven trillion, twenty million, one thousand, twenty".