1099211020002 has 96 divisors (see below), whose sum is σ = 2475045696240. Its totient is φ = 352271462400.

The previous prime is 1099211019979. The next prime is 1099211020003. The reversal of 1099211020002 is 2000201129901.

It can be written as a sum of positive squares in 8 ways, for example, as 596556961641 + 502654058361 = 772371^2 + 708981^2 .

It is not an unprimeable number, because it can be changed into a prime (1099211020003) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 111015252 + ... + 111025152.

Almost surely, 2^{1099211020002} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1099211020002, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1237522848120).

1099211020002 is an abundant number, since it is smaller than the sum of its proper divisors (1375834676238).

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

1099211020002 is a wasteful number, since it uses less digits than its factorization.

1099211020002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11908 (or 11905 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 27.

Adding to 1099211020002 its reverse (2000201129901), we get a palindrome (3099412149903).

The spelling of 1099211020002 in words is "one trillion, ninety-nine billion, two hundred eleven million, twenty thousand, two".