1202011101989 has 2 divisors, whose sum is σ = 1202011101990. Its totient is φ = 1202011101988.

The previous prime is 1202011101979. The next prime is 1202011102027. The reversal of 1202011101989 is 9891011102021.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 786843509764 + 415167592225 = 887042^2 + 644335^2 .

It is a cyclic number.

It is not a de Polignac number, because 1202011101989 - 2¹² = 1202011097893 is a prime.

It is a super-2 number, since 2×1202011101989² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1202011101979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 601005550994 + 601005550995.

It is an arithmetic number, because the mean of its divisors is an integer number (601005550995).

Almost surely, 2^{1202011101989} is an apocalyptic number.

It is an amenable number.

1202011101989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1202011101989 is an equidigital number, since it uses as much as digits as its factorization.

1202011101989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 35.

The spelling of 1202011101989 in words is "one trillion, two hundred two billion, eleven million, one hundred one thousand, nine hundred eighty-nine".