211121002021012 has 6 divisors (see below), whose sum is σ = 369461753536778. Its totient is φ = 105560501010504.

The previous prime is 211121002020967. The next prime is 211121002021057. The reversal of 211121002021012 is 210120200121112.

It is an interprime number because it is at equal distance from previous prime (211121002020967) and next prime (211121002021057).

It can be written as a sum of positive squares in only one way, i.e., 196069054081156 + 15051947939856 = 14002466^2 + 3879684^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26390125252623 + ... + 26390125252630.

Almost surely, 2^{211121002021012} is an apocalyptic number.

It is an amenable number.

211121002021012 is a deficient number, since it is larger than the sum of its proper divisors (158340751515766).

211121002021012 is a wasteful number, since it uses less digits than its factorization.

211121002021012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52780250505257 (or 52780250505255 counting only the distinct ones).

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

Adding to 211121002021012 its reverse (210120200121112), we get a palindrome (421241202142124).

The spelling of 211121002021012 in words is "two hundred eleven trillion, one hundred twenty-one billion, two million, twenty-one thousand, twelve".