211210202021020 has 48 divisors (see below), whose sum is σ = 456384488319648. Its totient is φ = 82069348025600.

The previous prime is 211210202020969. The next prime is 211210202021053. The reversal of 211210202021020 is 20120202012112.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 211210202020985 and 211210202021003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 986303374 + ... + 986517493.

It is an arithmetic number, because the mean of its divisors is an integer number (9508010173326).

Almost surely, 2^{211210202021020} is an apocalyptic number.

211210202021020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

211210202021020 is an abundant number, since it is smaller than the sum of its proper divisors (245174286298628).

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

211210202021020 is a wasteful number, since it uses less digits than its factorization.

211210202021020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1972821030 (or 1972821028 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 16.

Adding to 211210202021020 its reverse (20120202012112), we get a palindrome (231330404033132).

The spelling of 211210202021020 in words is "two hundred eleven trillion, two hundred ten billion, two hundred two million, twenty-one thousand, twenty".