1211021000008 has 32 divisors (see below), whose sum is σ = 2274884710560. Its totient is φ = 604385781120.

The previous prime is 1211020999961. The next prime is 1211021000029. The reversal of 1211021000008 is 8000001201121.

It is a junction number, because it is equal to n+sod(n) for n = 1211020999955 and 1211021000000.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14256943 + ... + 14341633.

It is an arithmetic number, because the mean of its divisors is an integer number (71090147205).

Almost surely, 2^{1211021000008} is an apocalyptic number.

It is an amenable number.

1211021000008 is a deficient number, since it is larger than the sum of its proper divisors (1063863710552).

1211021000008 is a wasteful number, since it uses less digits than its factorization.

1211021000008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87997 (or 87993 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 16.

Adding to 1211021000008 its reverse (8000001201121), we get a palindrome (9211022201129).

The spelling of 1211021000008 in words is "one trillion, two hundred eleven billion, twenty-one million, eight", and thus it is an aban number.