1211000102002 has 4 divisors (see below), whose sum is σ = 1816500153006. Its totient is φ = 605500051000.

The previous prime is 1211000101951. The next prime is 1211000102017. The reversal of 1211000102002 is 2002010001121.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 977035379401 + 233964722601 = 988451^2 + 483699^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1211000102002.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 302750025499 + ... + 302750025502.

Almost surely, 2^{1211000102002} is an apocalyptic number.

1211000102002 is a deficient number, since it is larger than the sum of its proper divisors (605500051004).

1211000102002 is an equidigital number, since it uses as much as digits as its factorization.

1211000102002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 605500051003.

The product of its (nonzero) digits is 8, while the sum is 10.

Adding to 1211000102002 its reverse (2002010001121), we get a palindrome (3213010103123).

The spelling of 1211000102002 in words is "one trillion, two hundred eleven billion, one hundred two thousand, two".