1211001011002 has 16 divisors (see below), whose sum is σ = 1879552295424. Its totient is φ = 584576370000.

The previous prime is 1211001010991. The next prime is 1211001011029. The reversal of 1211001011002 is 2001101001121.

It is a super-2 number, since 2×1211001011002² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1211001011002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23171374 + ... + 23223577.

It is an arithmetic number, because the mean of its divisors is an integer number (117472018464).

Almost surely, 2^{1211001011002} is an apocalyptic number.

1211001011002 is a deficient number, since it is larger than the sum of its proper divisors (668551284422).

1211001011002 is a wasteful number, since it uses less digits than its factorization.

1211001011002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46395405.

The product of its (nonzero) digits is 4, while the sum is 10.

Adding to 1211001011002 its reverse (2001101001121), we get a palindrome (3212102012123).

The spelling of 1211001011002 in words is "one trillion, two hundred eleven billion, one million, eleven thousand, two".