1321001214210 has 192 divisors, whose sum is σ = 3659243043456. Its totient is φ = 330177254400.

The previous prime is 1321001214193. The next prime is 1321001214229. The reversal of 1321001214210 is 124121001231.

1321001214210 is a `hidden beast` number, since 13 + 210 + 0 + 1 + 21 + 421 + 0 = 666.

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 9610629 + ... + 9747111.

It is an arithmetic number, because the mean of its divisors is an integer number (19058557518).

Almost surely, 2^{1321001214210} is an apocalyptic number.

1321001214210 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1321001214210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1829621521728).

1321001214210 is an abundant number, since it is smaller than the sum of its proper divisors (2338241829246).

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

1321001214210 is a wasteful number, since it uses less digits than its factorization.

1321001214210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136641 (or 136638 counting only the distinct ones).

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

Adding to 1321001214210 its reverse (124121001231), we get a palindrome (1445122215441).

The spelling of 1321001214210 in words is "one trillion, three hundred twenty-one billion, one million, two hundred fourteen thousand, two hundred ten".