211400231420020 has 12 divisors (see below), whose sum is σ = 443940485982084. Its totient is φ = 84560092568000.

The previous prime is 211400231419969. The next prime is 211400231420023. The reversal of 211400231420020 is 20024132004112.

It can be written as a sum of positive squares in 2 ways, for example, as 124786906689636 + 86613324730384 = 11170806^2 + 9306628^2 .

It is a super-2 number, since 2×211400231420020² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 211400231419973 and 211400231420000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (211400231420023) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5285005785481 + ... + 5285005785520.

It is an arithmetic number, because the mean of its divisors is an integer number (36995040498507).

Almost surely, 2^{211400231420020} is an apocalyptic number.

211400231420020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211400231420020 is an abundant number, since it is smaller than the sum of its proper divisors (232540254562064).

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

211400231420020 is a wasteful number, since it uses less digits than its factorization.

211400231420020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10570011571010 (or 10570011571008 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 211400231420020 its reverse (20024132004112), we get a palindrome (231424363424132).

The spelling of 211400231420020 in words is "two hundred eleven trillion, four hundred billion, two hundred thirty-one million, four hundred twenty thousand, twenty".