1320211023021 has 36 divisors (see below), whose sum is σ = 2125615171680. Its totient is φ = 788858439600.

The previous prime is 1320211023013. The next prime is 1320211023029. The reversal of 1320211023021 is 1203201120231.

1320211023021 is a `hidden beast` number, since 1 + 320 + 2 + 110 + 230 + 2 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (1320211023013) and next prime (1320211023029).

It is not a de Polignac number, because 1320211023021 - 2³ = 1320211023013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1320211022985 and 1320211023003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1320211023029) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 8460111 + ... + 8614748.

It is an arithmetic number, because the mean of its divisors is an integer number (59044865880).

Almost surely, 2^{1320211023021} is an apocalyptic number.

1320211023021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1320211023021 is a deficient number, since it is larger than the sum of its proper divisors (805404148659).

1320211023021 is a wasteful number, since it uses less digits than its factorization.

1320211023021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17074958 (or 17074944 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 1320211023021 its reverse (1203201120231), we get a palindrome (2523412143252).

The spelling of 1320211023021 in words is "one trillion, three hundred twenty billion, two hundred eleven million, twenty-three thousand, twenty-one".