201000011011020 has 216 divisors, whose sum is σ = 684659869364016. Its totient is φ = 49476925585152.

The previous prime is 201000011010977. The next prime is 201000011011039. The reversal of 201000011011020 is 20110110000102.

It is a happy number.

It is a super-2 number, since 2×201000011011020² (a number of 29 digits) contains 22 as substring.

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 = 201000011010993 and 201000011011011.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 121539687 + ... + 123182366.

It is an arithmetic number, because the mean of its divisors is an integer number (3169721617426).

Almost surely, 2^{201000011011020} is an apocalyptic number.

201000011011020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

201000011011020 is an abundant number, since it is smaller than the sum of its proper divisors (483659858352996).

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

201000011011020 is a wasteful number, since it uses less digits than its factorization.

201000011011020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244722103 (or 244722076 counting only the distinct ones).

The product of its (nonzero) digits is 4, while the sum is 9.

Adding to 201000011011020 its reverse (20110110000102), we get a palindrome (221110121011122).

The spelling of 201000011011020 in words is "two hundred one trillion, eleven million, eleven thousand, twenty".