201212011022020 has 24 divisors (see below), whose sum is σ = 423326267943768. Its totient is φ = 80336033971200.

The previous prime is 201212011021981. The next prime is 201212011022047. The reversal of 201212011022020 is 20220110212102.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 22006025159364 + 179205985862656 = 4691058^2 + 13386784^2 .

It is a super-3 number, since 3×201212011022020³ (a number of 44 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 201212011021985 and 201212011022003.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9298141261 + ... + 9298162900.

It is an arithmetic number, because the mean of its divisors is an integer number (17638594497657).

Almost surely, 2^{201212011022020} is an apocalyptic number.

201212011022020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201212011022020 is an abundant number, since it is smaller than the sum of its proper divisors (222114256921748).

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

201212011022020 is a wasteful number, since it uses less digits than its factorization.

201212011022020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18596304711 (or 18596304709 counting only the distinct ones).

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

Adding to 201212011022020 its reverse (20220110212102), we get a palindrome (221432121234122).

The spelling of 201212011022020 in words is "two hundred one trillion, two hundred twelve billion, eleven million, twenty-two thousand, twenty".