1211002100022 has 64 divisors (see below), whose sum is σ = 2854522976256. Its totient is φ = 337659528960.

The previous prime is 1211002099963. The next prime is 1211002100029. The reversal of 1211002100022 is 2200012001121.

It is a junction number, because it is equal to n+sod(n) for n = 1211002099980 and 1211002100007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1211002100029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1986118 + ... + 2523225.

It is an arithmetic number, because the mean of its divisors is an integer number (44601921504).

Almost surely, 2^{1211002100022} is an apocalyptic number.

1211002100022 is an abundant number, since it is smaller than the sum of its proper divisors (1643520876234).

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

1211002100022 is a wasteful number, since it uses less digits than its factorization.

1211002100022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4509685.

The product of its (nonzero) digits is 16, while the sum is 12.

Adding to 1211002100022 its reverse (2200012001121), we get a palindrome (3411014101143).

The spelling of 1211002100022 in words is "one trillion, two hundred eleven billion, two million, one hundred thousand, twenty-two".