1020201211012 has 6 divisors (see below), whose sum is σ = 1785352119278. Its totient is φ = 510100605504.

The previous prime is 1020201210971. The next prime is 1020201211019. The reversal of 1020201211012 is 2101121020201.

It can be written as a sum of positive squares in only one way, i.e., 1010941767936 + 9259443076 = 1005456^2 + 96226^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1020201210983 and 1020201211001.

It is not an unprimeable number, because it can be changed into a prime (1020201211019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127525151373 + ... + 127525151380.

Almost surely, 2^{1020201211012} is an apocalyptic number.

It is an amenable number.

1020201211012 is a deficient number, since it is larger than the sum of its proper divisors (765150908266).

1020201211012 is a wasteful number, since it uses less digits than its factorization.

1020201211012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255050302757 (or 255050302755 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 13.

Adding to 1020201211012 its reverse (2101121020201), we get a palindrome (3121322231213).

The spelling of 1020201211012 in words is "one trillion, twenty billion, two hundred one million, two hundred eleven thousand, twelve".