1211020001099 has 8 divisors (see below), whose sum is σ = 1233885861072. Its totient is φ = 1188154749600.

The previous prime is 1211020001089. The next prime is 1211020001119. The reversal of 1211020001099 is 9901000201121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1211020001099 - 2¹² = 1211019997003 is a prime.

It is a super-2 number, since 2×1211020001099² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1211020001069) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7085549 + ... + 7254449.

It is an arithmetic number, because the mean of its divisors is an integer number (154235732634).

Almost surely, 2^{1211020001099} is an apocalyptic number.

1211020001099 is a deficient number, since it is larger than the sum of its proper divisors (22865859973).

1211020001099 is a wasteful number, since it uses less digits than its factorization.

1211020001099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 304237.

The product of its (nonzero) digits is 324, while the sum is 26.

The spelling of 1211020001099 in words is "one trillion, two hundred eleven billion, twenty million, one thousand, ninety-nine".