201012211231020 has 240 divisors, whose sum is σ = 743913293426688. Its totient is φ = 44463530517120.

The previous prime is 201012211231019. The next prime is 201012211231021. The reversal of 201012211231020 is 20132112210102.

201012211231020 is a `hidden beast` number, since 2 + 0 + 101 + 221 + 12 + 310 + 20 = 666.

201012211231020 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (201012211231019) and next prime (201012211231021).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 201012211230984 and 201012211231002.

It is not an unprimeable number, because it can be changed into a prime (201012211231021) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 285550792 + ... + 286253871.

Almost surely, 2^{201012211231020} is an apocalyptic number.

201012211231020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201012211231020 is an abundant number, since it is smaller than the sum of its proper divisors (542901082195668).

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

201012211231020 is a wasteful number, since it uses less digits than its factorization.

201012211231020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 571804722 (or 571804711 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 201012211231020 its reverse (20132112210102), we get a palindrome (221144323441122).

The spelling of 201012211231020 in words is "two hundred one trillion, twelve billion, two hundred eleven million, two hundred thirty-one thousand, twenty".