401211230020 has 12 divisors (see below), whose sum is σ = 842543583084. Its totient is φ = 160484492000.

The previous prime is 401211230011. The next prime is 401211230027. The reversal of 401211230020 is 20032112104.

It can be written as a sum of positive squares in 2 ways, for example, as 235387988224 + 165823241796 = 485168^2 + 407214^2 .

It is a super-2 number, since 2×401211230020² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401211229976 and 401211230003.

It is not an unprimeable number, because it can be changed into a prime (401211230027) 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, 10030280731 + ... + 10030280770.

It is an arithmetic number, because the mean of its divisors is an integer number (70211965257).

Almost surely, 2^401211230020 is an apocalyptic number.

It is an amenable number.

401211230020 is an abundant number, since it is smaller than the sum of its proper divisors (441332353064).

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

401211230020 is a wasteful number, since it uses less digits than its factorization.

401211230020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20060561510 (or 20060561508 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 401211230020 its reverse (20032112104), we get a palindrome (421243342124).

The spelling of 401211230020 in words is "four hundred one billion, two hundred eleven million, two hundred thirty thousand, twenty".