1201311210220 has 72 divisors (see below), whose sum is σ = 2840576989824. Its totient is φ = 426185760000.

The previous prime is 1201311210193. The next prime is 1201311210317. The reversal of 1201311210220 is 220121131021.

It is a junction number, because it is equal to n+sod(n) for n = 1201311210194 and 1201311210203.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5954556 + ... + 6152995.

It is an arithmetic number, because the mean of its divisors is an integer number (39452458192).

Almost surely, 2^{1201311210220} is an apocalyptic number.

1201311210220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1201311210220 is an abundant number, since it is smaller than the sum of its proper divisors (1639265779604).

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

1201311210220 is a wasteful number, since it uses less digits than its factorization.

1201311210220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12107623 (or 12107610 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

Adding to 1201311210220 its reverse (220121131021), we get a palindrome (1421432341241).

The spelling of 1201311210220 in words is "one trillion, two hundred one billion, three hundred eleven million, two hundred ten thousand, two hundred twenty".